Index: stylesheets/lfs-xsl/docbook-xsl-1.78.1/assembly/schema/assembly51b7.rnc
===================================================================
--- stylesheets/lfs-xsl/docbook-xsl-1.78.1/assembly/schema/assembly51b7.rnc	(revision 15c7d39533a1eb1da0748011f3378fd0f02ed14d)
+++ stylesheets/lfs-xsl/docbook-xsl-1.78.1/assembly/schema/assembly51b7.rnc	(revision 15c7d39533a1eb1da0748011f3378fd0f02ed14d)
@@ -0,0 +1,11035 @@
+namespace a = "http://relaxng.org/ns/compatibility/annotations/1.0"
+namespace ctrl = "http://nwalsh.com/xmlns/schema-control/"
+default namespace db = "http://docbook.org/ns/docbook"
+namespace html = "http://www.w3.org/1999/xhtml"
+namespace mml = "http://www.w3.org/1998/Math/MathML"
+namespace rng = "http://relaxng.org/ns/structure/1.0"
+namespace s = "http://purl.oclc.org/dsdl/schematron"
+namespace svg = "http://www.w3.org/2000/svg"
+namespace xlink = "http://www.w3.org/1999/xlink"
+
+# This file is part of DocBook Assembly V5.1b7
+# 
+# Copyright 2008-2011 HaL Computer Systems, Inc.,
+# O'Reilly & Associates, Inc., ArborText, Inc., Fujitsu Software
+# Corporation, Norman Walsh, Sun Microsystems, Inc., and the
+# Organization for the Advancement of Structured Information
+# Standards (OASIS).
+# 
+# Permission to use, copy, modify and distribute the DocBook schema
+# and its accompanying documentation for any purpose and without fee
+# is hereby granted in perpetuity, provided that the above copyright
+# notice and this paragraph appear in all copies. The copyright
+# holders make no representation about the suitability of the schema
+# for any purpose. It is provided "as is" without expressed or implied
+# warranty.
+# 
+# If you modify the DocBook schema in any way, label your schema as a
+# variant of DocBook. See the reference documentation
+# (http://docbook.org/tdg5/en/html/ch05.html#s-notdocbook)
+# for more information.
+# 
+# Please direct all questions, bug reports, or suggestions for changes
+# to the docbook@lists.oasis-open.org mailing list. For more
+# information, see http://www.oasis-open.org/docbook/.
+# 
+# ======================================================================
+div {
+  db._any.attribute =
+    
+    ## Any attribute, including any attribute in any namespace.
+    attribute * { text }
+  db._any =
+    
+    ## Any element from almost any namespace
+    element * - (db:* | html:*) {
+      (db._any.attribute | text | db._any)*
+    }
+}
+db.arch.attribute =
+  
+  ## Designates the computer or chip architecture to which the element applies
+  attribute arch { text }
+db.audience.attribute =
+  
+  ## Designates the intended audience to which the element applies, for example, system administrators, programmers, or new users.
+  attribute audience { text }
+db.condition.attribute =
+  
+  ## provides a standard place for application-specific effectivity
+  attribute condition { text }
+db.conformance.attribute =
+  
+  ## Indicates standards conformance characteristics of the element
+  attribute conformance { text }
+db.os.attribute =
+  
+  ## Indicates the operating system to which the element is applicable
+  attribute os { text }
+db.revision.attribute =
+  
+  ## Indicates the editorial revision to which the element belongs
+  attribute revision { text }
+db.security.attribute =
+  
+  ## Indicates something about the security level associated with the element to which it applies
+  attribute security { text }
+db.userlevel.attribute =
+  
+  ## Indicates the level of user experience for which the element applies
+  attribute userlevel { text }
+db.vendor.attribute =
+  
+  ## Indicates the computer vendor to which the element applies.
+  attribute vendor { text }
+db.wordsize.attribute =
+  
+  ## Indicates the word size (width in bits) of the computer architecture to which the element applies
+  attribute wordsize { text }
+db.effectivity.attributes =
+  db.arch.attribute?
+  & db.audience.attribute?
+  & db.condition.attribute?
+  & db.conformance.attribute?
+  & db.os.attribute?
+  & db.revision.attribute?
+  & db.security.attribute?
+  & db.userlevel.attribute?
+  & db.vendor.attribute?
+  & db.wordsize.attribute?
+db.endterm.attribute =
+  
+  ## Points to the element whose content is to be used as the text of the link
+  attribute endterm { xsd:IDREF }
+db.linkend.attribute =
+  
+  ## Points to an internal link target by identifying the value of its xml:id attribute
+  attribute linkend { xsd:IDREF }
+db.linkends.attribute =
+  
+  ## Points to one or more internal link targets by identifying the value of their xml:id attributes
+  attribute linkends { xsd:IDREFS }
+db.xlink.href.attribute =
+  
+  ## Identifies a link target with a URI
+  attribute xlink:href { xsd:anyURI }
+db.xlink.simple.type.attribute =
+  
+  ## Identifies the XLink link type
+  attribute xlink:type {
+    
+    ## An XLink simple link type
+    "simple"
+  }
+db.xlink.role.attribute =
+  
+  ## Identifies the XLink role of the link
+  attribute xlink:role { xsd:anyURI }
+db.xlink.arcrole.attribute =
+  
+  ## Identifies the XLink arcrole of the link
+  attribute xlink:arcrole { xsd:anyURI }
+db.xlink.title.attribute =
+  
+  ## Identifies the XLink title of the link
+  attribute xlink:title { text }
+db.xlink.show.enumeration =
+  
+  ## An application traversing to the ending resource should load it in a new window, frame, pane, or other relevant presentation context.
+  "new"
+  | 
+    ## An application traversing to the ending resource should load the resource in the same window, frame, pane, or other relevant presentation context in which the starting resource was loaded.
+    "replace"
+  | 
+    ## An application traversing to the ending resource should load its presentation in place of the presentation of the starting resource.
+    "embed"
+  | 
+    ## The behavior of an application traversing to the ending resource is unconstrained by XLink. The application should look for other markup present in the link to determine the appropriate behavior.
+    "other"
+  | 
+    ## The behavior of an application traversing to the ending resource is unconstrained by this specification. No other markup is present to help the application determine the appropriate behavior.
+    "none"
+db.xlink.show.attribute =
+  
+  ## Identifies the XLink show behavior of the link
+  attribute xlink:show { db.xlink.show.enumeration }
+db.xlink.actuate.enumeration =
+  
+  ## An application should traverse to the ending resource immediately on loading the starting resource.
+  "onLoad"
+  | 
+    ## An application should traverse from the starting resource to the ending resource only on a post-loading event triggered for the purpose of traversal.
+    "onRequest"
+  | 
+    ## The behavior of an application traversing to the ending resource is unconstrained by this specification. The application should look for other markup present in the link to determine the appropriate behavior.
+    "other"
+  | 
+    ## The behavior of an application traversing to the ending resource is unconstrained by this specification. No other markup is present to help the application determine the appropriate behavior.
+    "none"
+db.xlink.actuate.attribute =
+  
+  ## Identifies the XLink actuate behavior of the link
+  attribute xlink:actuate { db.xlink.actuate.enumeration }
+db.xlink.simple.link.attributes =
+  db.xlink.simple.type.attribute?
+  & db.xlink.href.attribute?
+  & db.xlink.role.attribute?
+  & db.xlink.arcrole.attribute?
+  & db.xlink.title.attribute?
+  & db.xlink.show.attribute?
+  & db.xlink.actuate.attribute?
+db.xlink.attributes =
+  db.xlink.simple.link.attributes
+  | (db.xlink.extended.link.attributes
+     | db.xlink.locator.link.attributes
+     | db.xlink.arc.link.attributes
+     | db.xlink.resource.link.attributes
+     | db.xlink.title.link.attributes)
+db.xml.id.attribute =
+  
+  ## Identifies the unique ID value of the element
+  attribute xml:id { xsd:ID }
+db.version.attribute =
+  
+  ## Specifies the DocBook version of the element and its descendants
+  attribute version { text }
+db.xml.lang.attribute =
+  
+  ## Specifies the natural language of the element and its descendants
+  attribute xml:lang { text }
+db.xml.base.attribute =
+  
+  ## Specifies the base URI of the element and its descendants
+  attribute xml:base { xsd:anyURI }
+db.remap.attribute =
+  
+  ## Provides the name or similar semantic identifier assigned to the content in some previous markup scheme
+  attribute remap { text }
+db.xreflabel.attribute =
+  
+  ## Provides the text that is to be generated for a cross reference to the element
+  attribute xreflabel { text }
+db.xrefstyle.attribute =
+  
+  ## Specifies a keyword or keywords identifying additional style information
+  attribute xrefstyle { text }
+db.revisionflag.enumeration =
+  
+  ## The element has been changed.
+  "changed"
+  | 
+    ## The element is new (has been added to the document).
+    "added"
+  | 
+    ## The element has been deleted.
+    "deleted"
+  | 
+    ## Explicitly turns off revision markup for this element.
+    "off"
+db.revisionflag.attribute =
+  
+  ## Identifies the revision status of the element
+  attribute revisionflag { db.revisionflag.enumeration }
+db.dir.enumeration =
+  
+  ## Left-to-right text
+  "ltr"
+  | 
+    ## Right-to-left text
+    "rtl"
+  | 
+    ## Left-to-right override
+    "lro"
+  | 
+    ## Right-to-left override
+    "rlo"
+db.dir.attribute =
+  
+  ## Identifies the direction of text in an element
+  attribute dir { db.dir.enumeration }
+db.common.base.attributes =
+  db.version.attribute?
+  & db.xml.lang.attribute?
+  & db.xml.base.attribute?
+  & db.remap.attribute?
+  & db.xreflabel.attribute?
+  & db.revisionflag.attribute?
+  & db.dir.attribute?
+  & db.effectivity.attributes
+db.common.attributes =
+  db.xml.id.attribute?
+  & db.common.base.attributes
+  & db.annotations.attribute?
+db.common.idreq.attributes =
+  db.xml.id.attribute
+  & db.common.base.attributes
+  & db.annotations.attribute?
+db.common.linking.attributes =
+  (db.linkend.attribute | db.xlink.attributes)?
+db.common.req.linking.attributes =
+  db.linkend.attribute | db.xlink.attributes
+db.common.data.attributes =
+  
+  ## Specifies the format of the data
+  attribute format { text }?,
+  (
+   ## Indentifies the location of the data by URI
+   attribute fileref { xsd:anyURI }
+   | 
+     ## Identifies the location of the data by external identifier (entity name)
+     attribute entityref { xsd:ENTITY })
+db.verbatim.continuation.enumeration =
+  
+  ## Line numbering continues from the immediately preceding element with the same name.
+  "continues"
+  | 
+    ## Line numbering restarts (begins at 1, usually).
+    "restarts"
+db.verbatim.continuation.attribute =
+  
+  ## Determines whether line numbering continues from the previous element or restarts.
+  attribute continuation { db.verbatim.continuation.enumeration }
+db.verbatim.linenumbering.enumeration =
+  
+  ## Lines are numbered.
+  "numbered"
+  | 
+    ## Lines are not numbered.
+    "unnumbered"
+db.verbatim.linenumbering.attribute =
+  
+  ## Determines whether lines are numbered.
+  attribute linenumbering { db.verbatim.linenumbering.enumeration }
+db.verbatim.startinglinenumber.attribute =
+  
+  ## Specifies the initial line number.
+  attribute startinglinenumber { xsd:integer }
+db.verbatim.language.attribute =
+  
+  ## Identifies the language (i.e. programming language) of the verbatim content.
+  attribute language { text }
+db.verbatim.xml.space.attribute =
+  
+  ## Can be used to indicate explicitly that whitespace in the verbatim environment is preserved. Whitespace must always be preserved in verbatim environments whether this attribute is specified or not.
+  attribute xml:space {
+    
+    ## Whitespace must be preserved.
+    "preserve"
+  }
+db.verbatim.common.attributes =
+  db.verbatim.continuation.attribute?
+  & db.verbatim.linenumbering.attribute?
+  & db.verbatim.startinglinenumber.attribute?
+  & db.verbatim.xml.space.attribute?
+db.verbatim.attributes =
+  db.verbatim.common.attributes & db.verbatim.language.attribute?
+db.label.attribute =
+  
+  ## Specifies an identifying string for presentation purposes
+  attribute label { text }
+db.width.characters.attribute =
+  
+  ## Specifies the width (in characters) of the element
+  attribute width { xsd:nonNegativeInteger }
+db.spacing.enumeration =
+  
+  ## The spacing should be "compact".
+  "compact"
+  | 
+    ## The spacing should be "normal".
+    "normal"
+db.spacing.attribute =
+  
+  ## Specifies (a hint about) the spacing of the content
+  attribute spacing { db.spacing.enumeration }
+db.pgwide.enumeration =
+  
+  ## The element should be rendered in the current text flow (with the flow column width).
+  "0"
+  | 
+    ## The element should be rendered across the full text page.
+    "1"
+db.pgwide.attribute =
+  
+  ## Indicates if the element is rendered across the column or the page
+  attribute pgwide { db.pgwide.enumeration }
+db.language.attribute =
+  
+  ## Identifies the language (i.e. programming language) of the content.
+  attribute language { text }
+db.performance.enumeration =
+  
+  ## The content describes an optional step or steps.
+  "optional"
+  | 
+    ## The content describes a required step or steps.
+    "required"
+db.performance.attribute =
+  
+  ## Specifies if the content is required or optional.
+  attribute performance { db.performance.enumeration }
+db.floatstyle.attribute =
+  
+  ## Specifies style information to be used when rendering the float
+  attribute floatstyle { text }
+db.width.attribute =
+  
+  ## Specifies the width of the element
+  attribute width { text }
+db.depth.attribute =
+  
+  ## Specifies the depth of the element
+  attribute depth { text }
+db.contentwidth.attribute =
+  
+  ## Specifies the width of the content rectangle
+  attribute contentwidth { text }
+db.contentdepth.attribute =
+  
+  ## Specifies the depth of the content rectangle
+  attribute contentdepth { text }
+db.scalefit.enumeration =
+  
+  ## False (do not scale-to-fit; anamorphic scaling may occur)
+  "0"
+  | 
+    ## True (scale-to-fit; anamorphic scaling is forbidden)
+    "1"
+db.scale.attribute =
+  
+  ## Specifies the scaling factor
+  attribute scale { xsd:positiveInteger }
+db.classid.attribute =
+  
+  ## Specifies a classid for a media object player
+  attribute classid { text }
+db.autoplay.attribute =
+  
+  ## Specifies the autoplay setting for a media object player
+  attribute autoplay { text }
+db.halign.enumeration =
+  
+  ## Centered horizontally
+  "center"
+  | 
+    ## Aligned horizontally on the specified character
+    "char"
+  | 
+    ## Fully justified (left and right margins or edges)
+    "justify"
+  | 
+    ## Left aligned
+    "left"
+  | 
+    ## Right aligned
+    "right"
+db.valign.enumeration =
+  
+  ## Aligned on the bottom of the region
+  "bottom"
+  | 
+    ## Centered vertically
+    "middle"
+  | 
+    ## Aligned on the top of the region
+    "top"
+db.biblio.class.enumeration =
+  
+  ## A digital object identifier.
+  "doi"
+  | 
+    ## An international standard book number.
+    "isbn"
+  | 
+    ## An international standard technical report number (ISO 10444).
+    "isrn"
+  | 
+    ## An international standard serial number.
+    "issn"
+  | 
+    ## An international standard text code.
+    "istc"
+  | 
+    ## A Library of Congress reference number.
+    "libraryofcongress"
+  | 
+    ## A publication number (an internal number or possibly organizational standard).
+    "pubsnumber"
+  | 
+    ## A Uniform Resource Identifier
+    "uri"
+db.biblio.class-enum.attribute =
+  
+  ## Identifies the kind of bibliographic identifier
+  attribute class { db.biblio.class.enumeration }?
+db.biblio.class-other.attribute =
+  
+  ## Identifies the nature of the non-standard bibliographic identifier
+  attribute otherclass { xsd:NMTOKEN }
+db.biblio.class-other.attributes =
+  
+  ## Identifies the kind of bibliographic identifier
+  attribute class {
+    
+    ## Indicates that the identifier is some 'other' kind.
+    "other"
+  }
+  & db.biblio.class-other.attribute
+db.biblio.class.attribute =
+  db.biblio.class-enum.attribute | db.biblio.class-other.attributes
+db.ubiq.inlines =
+  (db.inlinemediaobject
+   | db.remark
+   | db.link.inlines
+   | db.alt
+   | db.trademark
+   | # below, effectively the publishing inlines (as of 5.0)
+     db.abbrev
+   | db.acronym
+   | db.date
+   | db._emphasis
+   | db.footnote
+   | db.footnoteref
+   | db._foreignphrase
+   | db._phrase
+   | db._quote
+   | db.subscript
+   | db.superscript
+   | db.wordasword)
+  | db.annotation
+  | (db._firstterm | db._glossterm)
+  | db.indexterm
+  | db.coref
+db._text = (text | db.ubiq.inlines | db._phrase | db.replaceable)*
+db._title = db.title? & db.titleabbrev? & db.subtitle?
+db._title.req = db.title & db.titleabbrev? & db.subtitle?
+db._title.only = db.title? & db.titleabbrev?
+db._title.onlyreq = db.title & db.titleabbrev?
+db._info = (db._title, db.titleforbidden.info?) | db.info?
+db._info.title.req =
+  (db._title.req, db.titleforbidden.info?) | db.titlereq.info
+db._info.title.only =
+  (db._title.only, db.titleforbidden.info?) | db.titleonly.info
+db._info.title.onlyreq =
+  (db._title.onlyreq, db.titleforbidden.info?) | db.titleonlyreq.info
+db._info.title.forbidden = db.titleforbidden.info?
+db.all.inlines =
+  text | db.ubiq.inlines | db.general.inlines | db.domain.inlines
+db.general.inlines =
+  db.publishing.inlines
+  | db.product.inlines
+  | db.bibliography.inlines
+  | db.graphic.inlines
+  | db.indexing.inlines
+  | db.link.inlines
+db.domain.inlines =
+  db.technical.inlines
+  | db.math.inlines
+  | db.markup.inlines
+  | db.gui.inlines
+  | db.keyboard.inlines
+  | db.os.inlines
+  | db.programming.inlines
+  | db.error.inlines
+db.technical.inlines =
+  (db.replaceable | db.package | db.parameter)
+  | db.termdef
+  | db.nonterminal
+  | (db.systemitem | db.option | db.optional | db.property)
+db.product.inlines =
+  db.trademark
+  | (db.productnumber
+     | db.productname
+     | db.database
+     | db.application
+     | db.hardware)
+db.bibliography.inlines =
+  db.citation
+  | db.citerefentry
+  | db.citetitle
+  | db.citebiblioid
+  | db.author
+  | db.person
+  | db.personname
+  | db.org
+  | db.orgname
+  | db.editor
+  | db.jobtitle
+db.publishing.inlines =
+  (db.abbrev
+   | db.acronym
+   | db.date
+   | db.emphasis
+   | db.footnote
+   | db.footnoteref
+   | db.foreignphrase
+   | db.phrase
+   | db.quote
+   | db.subscript
+   | db.superscript
+   | db.wordasword)
+  | db.glossary.inlines
+  | db.coref
+db.graphic.inlines = db.inlinemediaobject
+db.indexing.inlines = notAllowed | db.indexterm
+db.link.inlines =
+  (db.xref | db.link | db.olink | db.anchor) | db.biblioref
+db.nopara.blocks =
+  (db.list.blocks
+   | db.formal.blocks
+   | db.informal.blocks
+   | db.publishing.blocks
+   | db.graphic.blocks
+   | db.technical.blocks
+   | db.verbatim.blocks
+   | db.bridgehead
+   | db.remark
+   | db.revhistory)
+  | db.indexterm
+  | db.synopsis.blocks
+  | db.admonition.blocks
+db.para.blocks = db.anchor | db.para | db.formalpara | db.simpara
+db.all.blocks = (db.nopara.blocks | db.para.blocks) | db.annotation
+db.formal.blocks = (db.example | db.figure | db.table) | db.equation
+db.informal.blocks =
+  (db.informalexample | db.informalfigure | db.informaltable)
+  | db.informalequation
+db.publishing.blocks =
+  db.sidebar | db.blockquote | db.address | db.epigraph
+db.graphic.blocks = db.mediaobject | db.screenshot
+db.technical.blocks =
+  db.procedure
+  | db.task
+  | (db.productionset | db.constraintdef)
+  | db.msgset
+db.list.blocks =
+  (db.itemizedlist
+   | db.orderedlist
+   | db.procedure
+   | db.simplelist
+   | db.variablelist
+   | db.segmentedlist)
+  | db.glosslist
+  | db.bibliolist
+  | db.calloutlist
+  | db.qandaset
+db.verbatim.blocks =
+  (db.screen | db.literallayout)
+  | (db.programlistingco | db.screenco)
+  | (db.programlisting | db.synopsis)
+db.info.extension = db._any
+db.info.elements =
+  (db.abstract
+   | db.address
+   | db.artpagenums
+   | db.author
+   | db.authorgroup
+   | db.authorinitials
+   | db.bibliocoverage
+   | db.biblioid
+   | db.bibliosource
+   | db.collab
+   | db.confgroup
+   | db.contractsponsor
+   | db.contractnum
+   | db.copyright
+   | db.cover
+   | db.date
+   | db.edition
+   | db.editor
+   | db.issuenum
+   | db.keywordset
+   | db.legalnotice
+   | db.mediaobject
+   | db.org
+   | db.orgname
+   | db.othercredit
+   | db.pagenums
+   | db.printhistory
+   | db.pubdate
+   | db.publisher
+   | db.publishername
+   | db.releaseinfo
+   | db.revhistory
+   | db.seriesvolnums
+   | db.subjectset
+   | db.volumenum
+   | db.info.extension)
+  | db.annotation
+  | db.extendedlink
+  | (db.bibliomisc | db.bibliomset | db.bibliorelation | db.biblioset)
+  | db.itermset
+  | (db.productname | db.productnumber)
+db.bibliographic.elements =
+  db.info.elements
+  | db.publishing.inlines
+  | db.citerefentry
+  | db.citetitle
+  | db.citebiblioid
+  | db.person
+  | db.personblurb
+  | db.personname
+  | db.subtitle
+  | db.title
+  | db.titleabbrev
+div {
+  db.title.role.attribute = attribute role { text }
+  db.title.attlist =
+    db.title.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.title =
+    
+    ## The text of the title of a section of a document or of a formal block-level element
+    element title { db.title.attlist, db.all.inlines* }
+}
+div {
+  db.titleabbrev.role.attribute = attribute role { text }
+  db.titleabbrev.attlist =
+    db.titleabbrev.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.titleabbrev =
+    
+    ## The abbreviation of a title
+    element titleabbrev { db.titleabbrev.attlist, db.all.inlines* }
+}
+div {
+  db.subtitle.role.attribute = attribute role { text }
+  db.subtitle.attlist =
+    db.subtitle.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.subtitle =
+    
+    ## The subtitle of a document
+    element subtitle { db.subtitle.attlist, db.all.inlines* }
+}
+div {
+  db.info.role.attribute = attribute role { text }
+  db.info.attlist = db.info.role.attribute? & db.common.attributes
+  db.info =
+    
+    ## A wrapper for information about a component or other block
+    element info { db.info.attlist, (db._title & db.info.elements*) }
+}
+div {
+  db.titlereq.info.role.attribute = attribute role { text }
+  db.titlereq.info.attlist =
+    db.titlereq.info.role.attribute? & db.common.attributes
+  db.titlereq.info =
+    
+    ## A wrapper for information about a component or other block with a required title
+    element info {
+      db.titlereq.info.attlist, (db._title.req & db.info.elements*)
+    }
+}
+div {
+  db.titleonly.info.role.attribute = attribute role { text }
+  db.titleonly.info.attlist =
+    db.titleonly.info.role.attribute? & db.common.attributes
+  db.titleonly.info =
+    
+    ## A wrapper for information about a component or other block with only a title
+    element info {
+      db.titleonly.info.attlist, (db._title.only & db.info.elements*)
+    }
+}
+div {
+  db.titleonlyreq.info.role.attribute = attribute role { text }
+  db.titleonlyreq.info.attlist =
+    db.titleonlyreq.info.role.attribute? & db.common.attributes
+  db.titleonlyreq.info =
+    
+    ## A wrapper for information about a component or other block with only a required title
+    element info {
+      db.titleonlyreq.info.attlist,
+      (db._title.onlyreq & db.info.elements*)
+    }
+}
+div {
+  db.titleforbidden.info.role.attribute = attribute role { text }
+  db.titleforbidden.info.attlist =
+    db.titleforbidden.info.role.attribute? & db.common.attributes
+  db.titleforbidden.info =
+    
+    ## A wrapper for information about a component or other block without a title
+    element info { db.titleforbidden.info.attlist, db.info.elements* }
+}
+div {
+  db.subjectset.role.attribute = attribute role { text }
+  db.subjectset.scheme.attribute =
+    
+    ## Identifies the controlled vocabulary used by this set's terms
+    attribute scheme { xsd:NMTOKEN }
+  db.subjectset.attlist =
+    db.subjectset.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.subjectset.scheme.attribute?
+  db.subjectset =
+    
+    ## A set of terms describing the subject matter of a document
+    element subjectset { db.subjectset.attlist, db.subject+ }
+}
+div {
+  db.subject.role.attribute = attribute role { text }
+  db.subject.weight.attribute =
+    
+    ## Specifies a ranking for this subject relative to other subjects in the same set
+    attribute weight { text }
+  db.subject.attlist =
+    db.subject.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.subject.weight.attribute?
+  db.subject =
+    
+    ## One of a group of terms describing the subject matter of a document
+    element subject { db.subject.attlist, db.subjectterm+ }
+}
+div {
+  db.subjectterm.role.attribute = attribute role { text }
+  db.subjectterm.attlist =
+    db.subjectterm.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.subjectterm =
+    
+    ## A term in a group of terms describing the subject matter of a document
+    element subjectterm { db.subjectterm.attlist, text }
+}
+div {
+  db.keywordset.role.attribute = attribute role { text }
+  db.keywordset.attlist =
+    db.keywordset.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.keywordset =
+    
+    ## A set of keywords describing the content of a document
+    element keywordset { db.keywordset.attlist, db.keyword+ }
+}
+div {
+  db.keyword.role.attribute = attribute role { text }
+  db.keyword.attlist =
+    db.keyword.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.keyword =
+    
+    ## One of a set of keywords describing the content of a document
+    element keyword { db.keyword.attlist, text }
+}
+db.table.choice = notAllowed | db.cals.table | db.html.table
+db.informaltable.choice =
+  notAllowed | db.cals.informaltable | db.html.informaltable
+db.table = db.table.choice
+db.informaltable = db.informaltable.choice
+div {
+  db.procedure.role.attribute = attribute role { text }
+  db.procedure.attlist =
+    db.procedure.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.procedure.info = db._info.title.only
+  db.procedure =
+    
+    ## A list of operations to be performed in a well-defined sequence
+    element procedure {
+      db.procedure.attlist, db.procedure.info, db.all.blocks*, db.step+
+    }
+}
+div {
+  db.step.role.attribute = attribute role { text }
+  db.step.attlist =
+    db.step.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.performance.attribute?
+  db.step.info = db._info.title.only
+  # This content model is blocks*, step|stepalternatives, blocks* but
+  # expressed this way it avoids UPA issues in XSD and DTD versions
+  db.step =
+    
+    ## A unit of action in a procedure
+    element step {
+      db.step.attlist,
+      db.step.info,
+      ((db.all.blocks+,
+        ((db.substeps | db.stepalternatives), db.all.blocks*)?)
+       | ((db.substeps | db.stepalternatives), db.all.blocks*))
+    }
+}
+div {
+  db.stepalternatives.role.attribute = attribute role { text }
+  db.stepalternatives.attlist =
+    db.stepalternatives.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.performance.attribute?
+  db.stepalternatives.info = db._info.title.forbidden
+  db.stepalternatives =
+    
+    ## Alternative steps in a procedure
+    element stepalternatives {
+      db.stepalternatives.attlist, db.stepalternatives.info, db.step+
+    }
+}
+div {
+  db.substeps.role.attribute = attribute role { text }
+  db.substeps.attlist =
+    db.substeps.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.performance.attribute?
+  db.substeps =
+    
+    ## A wrapper for steps that occur within steps in a procedure
+    element substeps { db.substeps.attlist, db.step+ }
+}
+div {
+  db.sidebar.floatstyle.attribute = db.floatstyle.attribute
+  db.sidebar.role.attribute = attribute role { text }
+  db.sidebar.attlist =
+    db.sidebar.role.attribute?
+    & db.sidebar.floatstyle.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.sidebar.info = db._info
+  db.sidebar =
+    
+    ## A portion of a document that is isolated from the main narrative flow
+    [
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:sidebar"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:sidebar)"
+            "sidebar must not occur among the children or descendants of sidebar"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element sidebar {
+      db.sidebar.attlist, db.sidebar.info, db.all.blocks+
+    }
+}
+div {
+  db.abstract.role.attribute = attribute role { text }
+  db.abstract.attlist =
+    db.abstract.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.abstract.info = db._info.title.only
+  db.abstract =
+    
+    ## A summary
+    element abstract {
+      db.abstract.attlist, db.abstract.info, db.para.blocks+
+    }
+}
+div {
+  db.personblurb.role.attribute = attribute role { text }
+  db.personblurb.attlist =
+    db.personblurb.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.personblurb.info = db._info.title.only
+  db.personblurb =
+    
+    ## A short description or note about a person
+    element personblurb {
+      db.personblurb.attlist, db.personblurb.info, db.para.blocks+
+    }
+}
+div {
+  db.blockquote.role.attribute = attribute role { text }
+  db.blockquote.attlist =
+    db.blockquote.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.blockquote.info = db._info.title.only
+  db.blockquote =
+    
+    ## A quotation set off from the main text
+    element blockquote {
+      db.blockquote.attlist,
+      db.blockquote.info,
+      db.attribution?,
+      db.all.blocks+
+    }
+}
+div {
+  db.attribution.role.attribute = attribute role { text }
+  db.attribution.attlist =
+    db.attribution.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.attribution =
+    
+    ## The source of a block quote or epigraph
+    element attribution {
+      db.attribution.attlist,
+      (db._text
+       | db.person
+       | db.personname
+       | db.citetitle
+       | db.citation)*
+    }
+}
+div {
+  db.bridgehead.renderas.enumeration =
+    
+    ## Render as a first-level section
+    "sect1"
+    | 
+      ## Render as a second-level section
+      "sect2"
+    | 
+      ## Render as a third-level section
+      "sect3"
+    | 
+      ## Render as a fourth-level section
+      "sect4"
+    | 
+      ## Render as a fifth-level section
+      "sect5"
+  db.bridgehead.renderas-enum.attribute =
+    
+    ## Indicates how the bridge head should be rendered
+    attribute renderas { db.bridgehead.renderas.enumeration }?
+  db.bridgehead.renderas-other.attribute =
+    
+    ## Identifies the nature of the non-standard rendering
+    attribute otherrenderas { xsd:NMTOKEN }
+  db.bridgehead.renderas-other.attributes =
+    
+    ## Indicates how the bridge head should be rendered
+    attribute renderas {
+      
+      ## Identifies a non-standard rendering
+      "other"
+    }
+    & db.bridgehead.renderas-other.attribute
+  db.bridgehead.renderas.attribute =
+    db.bridgehead.renderas-enum.attribute
+    | db.bridgehead.renderas-other.attributes
+  db.bridgehead.role.attribute = attribute role { text }
+  db.bridgehead.attlist =
+    db.bridgehead.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.bridgehead.renderas.attribute?
+  db.bridgehead =
+    
+    ## A free-floating heading
+    element bridgehead { db.bridgehead.attlist, db.all.inlines* }
+}
+div {
+  db.remark.role.attribute = attribute role { text }
+  db.remark.attlist =
+    db.remark.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.remark =
+    
+    ## A remark (or comment) intended for presentation in a draft manuscript
+    element remark { db.remark.attlist, db.all.inlines* }
+}
+div {
+  db.epigraph.role.attribute = attribute role { text }
+  db.epigraph.attlist =
+    db.epigraph.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.epigraph.info = db._info.title.forbidden
+  db.epigraph =
+    
+    ## A short inscription at the beginning of a document or component
+    element epigraph {
+      db.epigraph.attlist,
+      db.epigraph.info,
+      db.attribution?,
+      (db.para.blocks | db.literallayout)+
+    }
+}
+div {
+  db.footnote.role.attribute = attribute role { text }
+  db.footnote.label.attribute =
+    
+    ## Identifies the desired footnote mark
+    attribute label { xsd:NMTOKEN }
+  db.footnote.attlist =
+    db.footnote.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.footnote.label.attribute?
+  db.footnote =
+    
+    ## A footnote
+    [
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:footnote"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:footnote)"
+            "footnote must not occur among the children or descendants of footnote"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:footnote"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:example)"
+            "example must not occur among the children or descendants of footnote"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:footnote"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:figure)"
+            "figure must not occur among the children or descendants of footnote"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:footnote"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:table)"
+            "table must not occur among the children or descendants of footnote"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:footnote"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:equation)"
+            "equation must not occur among the children or descendants of footnote"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:footnote"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:sidebar)"
+            "sidebar must not occur among the children or descendants of footnote"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:footnote"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:task)"
+            "task must not occur among the children or descendants of footnote"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:footnote"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:epigraph)"
+            "epigraph must not occur among the children or descendants of footnote"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:footnote"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:caution)"
+            "caution must not occur among the children or descendants of footnote"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:footnote"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:important)"
+            "important must not occur among the children or descendants of footnote"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:footnote"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:note)"
+            "note must not occur among the children or descendants of footnote"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:footnote"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:tip)"
+            "tip must not occur among the children or descendants of footnote"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:footnote"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:warning)"
+            "warning must not occur among the children or descendants of footnote"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element footnote { db.footnote.attlist, db.all.blocks+ }
+}
+div {
+  db.formalpara.role.attribute = attribute role { text }
+  db.formalpara.attlist =
+    db.formalpara.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.formalpara.info = db._info.title.onlyreq
+  db.formalpara =
+    
+    ## A paragraph with a title
+    element formalpara {
+      db.formalpara.attlist,
+      db.formalpara.info,
+      db.indexing.inlines*,
+      db.para
+    }
+}
+div {
+  db.para.role.attribute = attribute role { text }
+  db.para.attlist =
+    db.para.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.para.info = db._info.title.forbidden
+  db.para =
+    
+    ## A paragraph
+    element para {
+      db.para.attlist,
+      db.para.info,
+      (db.all.inlines | db.nopara.blocks)*
+    }
+}
+div {
+  db.simpara.role.attribute = attribute role { text }
+  db.simpara.attlist =
+    db.simpara.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.simpara.info = db._info.title.forbidden
+  db.simpara =
+    
+    ## A paragraph that contains only text and inline markup, no block elements
+    element simpara {
+      db.simpara.attlist, db.simpara.info, db.all.inlines*
+    }
+}
+div {
+  db.itemizedlist.role.attribute = attribute role { text }
+  db.itemizedlist.mark.attribute =
+    
+    ## Identifies the type of mark to be used on items in this list
+    attribute mark { xsd:NMTOKEN }
+  db.itemizedlist.attlist =
+    db.itemizedlist.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.spacing.attribute?
+    & db.itemizedlist.mark.attribute?
+  db.itemizedlist.info = db._info.title.only
+  db.itemizedlist =
+    
+    ## A list in which each entry is marked with a bullet or other dingbat
+    element itemizedlist {
+      db.itemizedlist.attlist,
+      db.itemizedlist.info,
+      db.all.blocks*,
+      db.listitem+
+    }
+}
+div {
+  db.orderedlist.role.attribute = attribute role { text }
+  db.orderedlist.continuation.enumeration =
+    
+    ## Specifies that numbering should begin where the preceding list left off
+    "continues"
+    | 
+      ## Specifies that numbering should begin again at 1
+      "restarts"
+  db.orderedlist.continuation.attribute =
+    
+    ## Indicates how list numbering should begin relative to the immediately preceding list
+    attribute continuation { db.orderedlist.continuation.enumeration }
+  db.orderedlist.startingnumber.attribute =
+    
+    ## Specifies the initial line number.
+    attribute startingnumber { xsd:integer }
+  db.orderedlist.inheritnum.enumeration =
+    
+    ## Specifies that numbering should ignore list nesting
+    "ignore"
+    | 
+      ## Specifies that numbering should inherit from outer-level lists
+      "inherit"
+  db.orderedlist.inheritnum.attribute =
+    
+    ## Indicates whether or not item numbering should be influenced by list nesting
+    attribute inheritnum { db.orderedlist.inheritnum.enumeration }
+  db.orderedlist.numeration.enumeration =
+    
+    ## Specifies Arabic numeration (1, 2, 3, …)
+    "arabic"
+    | 
+      ## Specifies upper-case alphabetic numeration (A, B, C, …)
+      "upperalpha"
+    | 
+      ## Specifies lower-case alphabetic numeration (a, b, c, …)
+      "loweralpha"
+    | 
+      ## Specifies upper-case Roman numeration (I, II, III, …)
+      "upperroman"
+    | 
+      ## Specifies lower-case Roman numeration (i, ii, iii …)
+      "lowerroman"
+  db.orderedlist.numeration.attribute =
+    
+    ## Indicates the desired numeration
+    attribute numeration { db.orderedlist.numeration.enumeration }
+  db.orderedlist.attlist =
+    db.orderedlist.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.spacing.attribute?
+    & (db.orderedlist.continuation.attribute
+       | db.orderedlist.startingnumber.attribute)?
+    & db.orderedlist.inheritnum.attribute?
+    & db.orderedlist.numeration.attribute?
+  db.orderedlist.info = db._info.title.only
+  db.orderedlist =
+    
+    ## A list in which each entry is marked with a sequentially incremented label
+    element orderedlist {
+      db.orderedlist.attlist,
+      db.orderedlist.info,
+      db.all.blocks*,
+      db.listitem+
+    }
+}
+div {
+  db.listitem.role.attribute = attribute role { text }
+  db.listitem.override.attribute =
+    
+    ## Specifies the keyword for the type of mark that should be used on this
+    ##  item, instead of the mark that would be used by default
+    attribute override { xsd:NMTOKEN }
+  db.listitem.attlist =
+    db.listitem.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.listitem.override.attribute?
+  db.listitem =
+    
+    ## A wrapper for the elements of a list item
+    element listitem { db.listitem.attlist, db.all.blocks+ }
+}
+div {
+  db.segmentedlist.role.attribute = attribute role { text }
+  db.segmentedlist.attlist =
+    db.segmentedlist.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.segmentedlist.info = db._info.title.only
+  db.segmentedlist =
+    
+    ## A segmented list, a list of sets of elements
+    element segmentedlist {
+      db.segmentedlist.attlist,
+      db.segmentedlist.info,
+      db.segtitle+,
+      db.seglistitem+
+    }
+}
+div {
+  db.segtitle.role.attribute = attribute role { text }
+  db.segtitle.attlist =
+    db.segtitle.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.segtitle =
+    
+    ## The title of an element of a list item in a segmented list
+    element segtitle { db.segtitle.attlist, db.all.inlines* }
+}
+div {
+  db.seglistitem.role.attribute = attribute role { text }
+  db.seglistitem.attlist =
+    db.seglistitem.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.seglistitem =
+    
+    ## A list item in a segmented list
+    [
+      s:pattern [
+        name = "Cardinality of segments and titles"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:seglistitem"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "count(db:seg) = count(../db:segtitle)"
+            "The number of seg elements must be the same as the number of segtitle elements in the parent segmentedlist"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element seglistitem { db.seglistitem.attlist, db.seg+ }
+}
+div {
+  db.seg.role.attribute = attribute role { text }
+  db.seg.attlist =
+    db.seg.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.seg =
+    
+    ## An element of a list item in a segmented list
+    element seg { db.seg.attlist, db.all.inlines* }
+}
+div {
+  db.simplelist.role.attribute = attribute role { text }
+  db.simplelist.type.enumeration =
+    
+    ## A tabular presentation in row-major order.
+    "horiz"
+    | 
+      ## A tabular presentation in column-major order.
+      "vert"
+    | 
+      ## An inline presentation, usually a comma-delimited list.
+      "inline"
+  db.simplelist.type.attribute =
+    
+    ## Specifies the type of list presentation.
+    [ a:defaultValue = "vert" ]
+    attribute type { db.simplelist.type.enumeration }
+  db.simplelist.columns.attribute =
+    
+    ## Specifies the number of columns for horizontal or vertical presentation
+    attribute columns { xsd:integer }
+  db.simplelist.attlist =
+    db.simplelist.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.simplelist.type.attribute?
+    & db.simplelist.columns.attribute?
+  db.simplelist =
+    
+    ## An undecorated list of single words or short phrases
+    element simplelist { db.simplelist.attlist, db.member+ }
+}
+div {
+  db.member.role.attribute = attribute role { text }
+  db.member.attlist =
+    db.member.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.member =
+    
+    ## An element of a simple list
+    element member { db.member.attlist, db.all.inlines* }
+}
+div {
+  db.variablelist.role.attribute = attribute role { text }
+  db.variablelist.termlength.attribute =
+    
+    ## Indicates a length beyond which the presentation system may consider a term too long and select an alternate presentation for that term, item, or list
+    attribute termlength { text }
+  db.variablelist.attlist =
+    db.variablelist.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.spacing.attribute?
+    & db.variablelist.termlength.attribute?
+  db.variablelist.info = db._info.title.only
+  db.variablelist =
+    
+    ## A list in which each entry is composed of a set of one or more terms and an associated description
+    element variablelist {
+      db.variablelist.attlist,
+      db.variablelist.info,
+      db.all.blocks*,
+      db.varlistentry+
+    }
+}
+div {
+  db.varlistentry.role.attribute = attribute role { text }
+  db.varlistentry.attlist =
+    db.varlistentry.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.varlistentry =
+    
+    ## A wrapper for a set of terms and the associated description in a variable list
+    element varlistentry {
+      db.varlistentry.attlist, db.term+, db.listitem
+    }
+}
+div {
+  db.term.role.attribute = attribute role { text }
+  db.term.attlist =
+    db.term.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.term =
+    
+    ## The word or phrase being defined or described in a variable list
+    element term { db.term.attlist, db.all.inlines* }
+}
+div {
+  db.example.role.attribute = attribute role { text }
+  db.example.label.attribute = db.label.attribute
+  db.example.width.attribute = db.width.characters.attribute
+  db.example.pgwide.attribute = db.pgwide.attribute
+  db.example.floatstyle.attribute = db.floatstyle.attribute
+  db.example.attlist =
+    db.example.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.example.label.attribute?
+    & db.example.floatstyle.attribute?
+    & (db.example.width.attribute | db.example.pgwide.attribute)?
+  db.example.info = db._info.title.onlyreq
+  db.example =
+    
+    ## A formal example, with a title
+    [
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:example"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:example)"
+            "example must not occur among the children or descendants of example"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:example"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:figure)"
+            "figure must not occur among the children or descendants of example"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:example"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:table)"
+            "table must not occur among the children or descendants of example"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:example"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:equation)"
+            "equation must not occur among the children or descendants of example"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:example"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:caution)"
+            "caution must not occur among the children or descendants of example"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:example"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:important)"
+            "important must not occur among the children or descendants of example"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:example"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:note)"
+            "note must not occur among the children or descendants of example"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:example"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:tip)"
+            "tip must not occur among the children or descendants of example"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:example"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:warning)"
+            "warning must not occur among the children or descendants of example"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element example {
+      db.example.attlist, db.example.info, db.all.blocks+, db.caption?
+    }
+}
+div {
+  db.informalexample.role.attribute = attribute role { text }
+  db.informalexample.width.attribute = db.width.characters.attribute
+  db.informalexample.pgwide.attribute = db.pgwide.attribute
+  db.informalexample.floatstyle.attribute = db.floatstyle.attribute
+  db.informalexample.attlist =
+    db.informalexample.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.informalexample.floatstyle.attribute?
+    & (db.informalexample.width.attribute
+       | db.informalexample.pgwide.attribute)?
+  db.informalexample.info = db._info.title.forbidden
+  db.informalexample =
+    
+    ## A displayed example without a title
+    element informalexample {
+      db.informalexample.attlist,
+      db.informalexample.info,
+      db.all.blocks+,
+      db.caption?
+    }
+}
+db.verbatim.inlines = (db.all.inlines | db.lineannotation) | db.co
+db.verbatim.contentmodel =
+  db._info.title.forbidden, (db.textobject | db.verbatim.inlines*)
+div {
+  db.literallayout.role.attribute = attribute role { text }
+  db.literallayout.class.enumeration =
+    
+    ## The literal layout should be formatted with a monospaced font
+    "monospaced"
+    | 
+      ## The literal layout should be formatted with the current font
+      "normal"
+  db.literallayout.class.attribute =
+    
+    ## Specifies the class of literal layout
+    attribute class { db.literallayout.class.enumeration }
+  db.literallayout.attlist =
+    db.literallayout.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.verbatim.attributes
+    & db.literallayout.class.attribute?
+  db.literallayout =
+    
+    ## A block of text in which line breaks and white space are to be reproduced faithfully
+    element literallayout {
+      db.literallayout.attlist, db.verbatim.contentmodel
+    }
+}
+div {
+  db.screen.role.attribute = attribute role { text }
+  db.screen.width.attribute = db.width.characters.attribute
+  db.screen.attlist =
+    db.screen.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.verbatim.attributes
+    & db.screen.width.attribute?
+  db.screen =
+    
+    ## Text that a user sees or might see on a computer screen
+    element screen { db.screen.attlist, db.verbatim.contentmodel }
+}
+div {
+  db.screenshot.role.attribute = attribute role { text }
+  db.screenshot.attlist =
+    db.screenshot.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.screenshot.info = db._info
+  db.screenshot =
+    
+    ## A representation of what the user sees or might see on a computer screen
+    element screenshot {
+      db.screenshot.attlist, db.screenshot.info, db.mediaobject
+    }
+}
+div {
+  db.figure.role.attribute = attribute role { text }
+  db.figure.label.attribute = db.label.attribute
+  db.figure.pgwide.attribute = db.pgwide.attribute
+  db.figure.floatstyle.attribute = db.floatstyle.attribute
+  db.figure.attlist =
+    db.figure.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.figure.label.attribute?
+    & db.figure.pgwide.attribute?
+    & db.figure.floatstyle.attribute?
+  db.figure.info = db._info.title.onlyreq
+  db.figure =
+    
+    ## A formal figure, generally an illustration, with a title
+    [
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:figure"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:example)"
+            "example must not occur among the children or descendants of figure"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:figure"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:figure)"
+            "figure must not occur among the children or descendants of figure"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:figure"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:table)"
+            "table must not occur among the children or descendants of figure"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:figure"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:equation)"
+            "equation must not occur among the children or descendants of figure"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:figure"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:caution)"
+            "caution must not occur among the children or descendants of figure"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:figure"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:important)"
+            "important must not occur among the children or descendants of figure"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:figure"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:note)"
+            "note must not occur among the children or descendants of figure"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:figure"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:tip)"
+            "tip must not occur among the children or descendants of figure"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:figure"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:warning)"
+            "warning must not occur among the children or descendants of figure"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element figure {
+      db.figure.attlist, db.figure.info, db.all.blocks+, db.caption?
+    }
+}
+div {
+  db.informalfigure.role.attribute = attribute role { text }
+  db.informalfigure.label.attribute = db.label.attribute
+  db.informalfigure.pgwide.attribute = db.pgwide.attribute
+  db.informalfigure.floatstyle.attribute = db.floatstyle.attribute
+  db.informalfigure.attlist =
+    db.informalfigure.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.informalfigure.label.attribute?
+    & db.informalfigure.pgwide.attribute?
+    & db.informalfigure.floatstyle.attribute?
+  db.informalfigure.info = db._info.title.forbidden
+  db.informalfigure =
+    
+    ## A untitled figure
+    element informalfigure {
+      db.informalfigure.attlist,
+      db.informalfigure.info,
+      db.all.blocks+,
+      db.caption?
+    }
+}
+db.mediaobject.content =
+  (db.videoobject | db.audioobject | db.imageobject | db.textobject)
+  | db.imageobjectco
+div {
+  db.mediaobject.role.attribute = attribute role { text }
+  db.mediaobject.attlist =
+    db.mediaobject.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.mediaobject.info = db._info.title.forbidden
+  db.mediaobject =
+    
+    ## A displayed media object (video, audio, image, etc.)
+    element mediaobject {
+      db.mediaobject.attlist,
+      db.mediaobject.info,
+      db.alt?,
+      db.mediaobject.content+,
+      db.caption?
+    }
+}
+div {
+  db.inlinemediaobject.role.attribute = attribute role { text }
+  db.inlinemediaobject.attlist =
+    db.inlinemediaobject.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.inlinemediaobject.info = db._info.title.forbidden
+  db.inlinemediaobject =
+    
+    ## An inline media object (video, audio, image, and so on)
+    element inlinemediaobject {
+      db.inlinemediaobject.attlist,
+      db.inlinemediaobject.info,
+      db.alt?,
+      db.mediaobject.content+
+    }
+}
+div {
+  db.videoobject.role.attribute = attribute role { text }
+  db.videoobject.attlist =
+    db.videoobject.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.videoobject.info = db._info.title.forbidden
+  db.videoobject =
+    
+    ## A wrapper for video data and its associated meta-information
+    element videoobject {
+      db.videoobject.attlist,
+      db.videoobject.info,
+      db.videodata,
+      db.multimediaparam*
+    }
+}
+div {
+  db.audioobject.role.attribute = attribute role { text }
+  db.audioobject.attlist =
+    db.audioobject.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.audioobject.info = db._info.title.forbidden
+  db.audioobject =
+    
+    ## A wrapper for audio data and its associated meta-information
+    element audioobject {
+      db.audioobject.attlist,
+      db.audioobject.info,
+      db.audiodata,
+      db.multimediaparam*
+    }
+}
+db.imageobject.content =
+  db.imagedata | db.imagedata.mathml | db.imagedata.svg
+div {
+  db.imageobject.role.attribute = attribute role { text }
+  db.imageobject.attlist =
+    db.imageobject.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.imageobject.info = db._info.title.forbidden
+  db.imageobject =
+    
+    ## A wrapper for image data and its associated meta-information
+    element imageobject {
+      db.imageobject.attlist,
+      db.imageobject.info,
+      db.imageobject.content
+    }
+}
+div {
+  db.textobject.role.attribute = attribute role { text }
+  db.textobject.attlist =
+    db.textobject.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.textobject.info = db._info.title.forbidden
+  db.textobject =
+    
+    ## A wrapper for a text description of an object and its associated meta-information
+    element textobject {
+      db.textobject.attlist,
+      db.textobject.info,
+      (db.phrase | db.textdata | db.all.blocks+)
+    }
+}
+div {
+  db.videodata.role.attribute = attribute role { text }
+  db.videodata.align.enumeration = db.halign.enumeration
+  db.videodata.align.attribute =
+    
+    ## Specifies the (horizontal) alignment of the video data
+    attribute align { db.videodata.align.enumeration }
+  db.videodata.autoplay.attribute = db.autoplay.attribute
+  db.videodata.classid.attribute = db.classid.attribute
+  db.videodata.valign.enumeration = db.valign.enumeration
+  db.videodata.valign.attribute =
+    
+    ## Specifies the vertical alignment of the video data
+    attribute valign { db.videodata.valign.enumeration }
+  db.videodata.width.attribute = db.width.attribute
+  db.videodata.depth.attribute = db.depth.attribute
+  db.videodata.contentwidth.attribute = db.contentwidth.attribute
+  db.videodata.contentdepth.attribute = db.contentdepth.attribute
+  db.videodata.scalefit.enumeration = db.scalefit.enumeration
+  db.videodata.scalefit.attribute =
+    
+    ## Determines if anamorphic scaling is forbidden
+    attribute scalefit { db.videodata.scalefit.enumeration }
+  db.videodata.scale.attribute = db.scale.attribute
+  db.videodata.attlist =
+    db.videodata.role.attribute?
+    & db.common.attributes
+    & db.common.data.attributes
+    & db.videodata.align.attribute?
+    & db.videodata.valign.attribute?
+    & db.videodata.width.attribute?
+    & db.videodata.contentwidth.attribute?
+    & db.videodata.scalefit.attribute?
+    & db.videodata.scale.attribute?
+    & db.videodata.depth.attribute?
+    & db.videodata.contentdepth.attribute?
+    & db.videodata.autoplay.attribute?
+    & db.videodata.classid.attribute?
+  db.videodata.info = db._info.title.forbidden
+  db.videodata =
+    
+    ## Pointer to external video data
+    element videodata { db.videodata.attlist, db.videodata.info }
+}
+div {
+  db.audiodata.role.attribute = attribute role { text }
+  db.audiodata.align.enumeration = db.halign.enumeration
+  db.audiodata.align.attribute =
+    
+    ## Specifies the (horizontal) alignment of the video data
+    attribute align { db.audiodata.align.enumeration }
+  db.audiodata.autoplay.attribute = db.autoplay.attribute
+  db.audiodata.classid.attribute = db.classid.attribute
+  db.audiodata.contentwidth.attribute = db.contentwidth.attribute
+  db.audiodata.contentdepth.attribute = db.contentdepth.attribute
+  db.audiodata.depth.attribute = db.depth.attribute
+  db.audiodata.scale.attribute = db.scale.attribute
+  db.audiodata.scalefit.enumeration = db.scalefit.enumeration
+  db.audiodata.scalefit.attribute =
+    
+    ## Determines if anamorphic scaling is forbidden
+    attribute scalefit { db.audiodata.scalefit.enumeration }
+  db.audiodata.valign.enumeration = db.valign.enumeration
+  db.audiodata.valign.attribute =
+    
+    ## Specifies the vertical alignment of the video data
+    attribute valign { db.audiodata.valign.enumeration }
+  db.audiodata.width.attribute = db.width.attribute
+  db.audiodata.attlist =
+    db.audiodata.role.attribute?
+    & db.common.attributes
+    & db.common.data.attributes
+    & db.audiodata.align.attribute?
+    & db.audiodata.autoplay.attribute?
+    & db.audiodata.classid.attribute?
+    & db.audiodata.contentdepth.attribute?
+    & db.audiodata.contentwidth.attribute?
+    & db.audiodata.depth.attribute?
+    & db.audiodata.scale.attribute?
+    & db.audiodata.scalefit.attribute?
+    & db.audiodata.valign.attribute?
+    & db.audiodata.width.attribute?
+  db.audiodata.info = db._info.title.forbidden
+  db.audiodata =
+    
+    ## Pointer to external audio data
+    element audiodata { db.audiodata.attlist, db.audiodata.info }
+}
+div {
+  db.imagedata.role.attribute = attribute role { text }
+  db.imagedata.align.enumeration = db.halign.enumeration
+  db.imagedata.align.attribute =
+    
+    ## Specifies the (horizontal) alignment of the image data
+    attribute align { db.imagedata.align.enumeration }
+  db.imagedata.valign.enumeration = db.valign.enumeration
+  db.imagedata.valign.attribute =
+    
+    ## Specifies the vertical alignment of the image data
+    attribute valign { db.imagedata.valign.enumeration }
+  db.imagedata.width.attribute = db.width.attribute
+  db.imagedata.depth.attribute = db.depth.attribute
+  db.imagedata.contentwidth.attribute = db.contentwidth.attribute
+  db.imagedata.contentdepth.attribute = db.contentdepth.attribute
+  db.imagedata.scalefit.enumeration = db.scalefit.enumeration
+  db.imagedata.scalefit.attribute =
+    
+    ## Determines if anamorphic scaling is forbidden
+    attribute scalefit { db.imagedata.scalefit.enumeration }
+  db.imagedata.scale.attribute = db.scale.attribute
+  db.imagedata.attlist =
+    db.imagedata.role.attribute?
+    & db.common.attributes
+    & db.common.data.attributes
+    & db.imagedata.align.attribute?
+    & db.imagedata.valign.attribute?
+    & db.imagedata.width.attribute?
+    & db.imagedata.contentwidth.attribute?
+    & db.imagedata.scalefit.attribute?
+    & db.imagedata.scale.attribute?
+    & db.imagedata.depth.attribute?
+    & db.imagedata.contentdepth.attribute?
+  db.imagedata.info = db._info.title.forbidden
+  db.imagedata =
+    
+    ## Pointer to external image data
+    element imagedata { db.imagedata.attlist, db.imagedata.info }
+}
+div {
+  db.textdata.role.attribute = attribute role { text }
+  db.textdata.encoding.attribute =
+    
+    ## Identifies the encoding of the text in the external file
+    attribute encoding { text }
+  db.textdata.attlist =
+    db.textdata.role.attribute?
+    & db.common.attributes
+    & db.common.data.attributes
+    & db.textdata.encoding.attribute?
+  db.textdata.info = db._info.title.forbidden
+  db.textdata =
+    
+    ## Pointer to external text data
+    element textdata { db.textdata.attlist, db.textdata.info }
+}
+div {
+  db.multimediaparam.role.attribute = attribute role { text }
+  db.multimediaparam.name.attribute =
+    
+    ## Specifies the name of the parameter
+    attribute name { text }
+  db.multimediaparam.value.attribute =
+    
+    ## Specifies the value of the parameter
+    attribute value { text }
+  db.multimediaparam.valuetype.attribute =
+    
+    ## Specifies the type of the value of the parameter
+    attribute valuetype { text }
+  db.multimediaparam.attlist =
+    db.multimediaparam.role.attribute?
+    & db.common.attributes
+    & db.multimediaparam.name.attribute
+    & db.multimediaparam.value.attribute
+    & db.multimediaparam.valuetype.attribute?
+  db.multimediaparam =
+    
+    ## Application specific parameters for a media player
+    element multimediaparam { db.multimediaparam.attlist, empty }
+}
+div {
+  db.caption.role.attribute = attribute role { text }
+  db.caption.attlist =
+    db.caption.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.caption.info = db._info.title.forbidden
+  db.caption =
+    
+    ## A caption
+    [
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:caption"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:example)"
+            "example must not occur among the children or descendants of caption"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:caption"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:figure)"
+            "figure must not occur among the children or descendants of caption"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:caption"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:table)"
+            "table must not occur among the children or descendants of caption"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:caption"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:equation)"
+            "equation must not occur among the children or descendants of caption"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:caption"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:sidebar)"
+            "sidebar must not occur among the children or descendants of caption"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:caption"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:task)"
+            "task must not occur among the children or descendants of caption"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:caption"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:caution)"
+            "caution must not occur among the children or descendants of caption"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:caption"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:important)"
+            "important must not occur among the children or descendants of caption"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:caption"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:note)"
+            "note must not occur among the children or descendants of caption"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:caption"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:tip)"
+            "tip must not occur among the children or descendants of caption"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:caption"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:warning)"
+            "warning must not occur among the children or descendants of caption"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element caption {
+      db.caption.attlist, db.caption.info, db.all.blocks+
+    }
+}
+div {
+  db.address.role.attribute = attribute role { text }
+  db.address.attlist =
+    db.address.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.verbatim.attributes
+  db.address =
+    
+    ## A real-world address, generally a postal address
+    element address {
+      db.address.attlist,
+      (db._text
+       | db.personname
+       | db.orgname
+       | db.pob
+       | db.street
+       | db.city
+       | db.state
+       | db.postcode
+       | db.country
+       | db.phone
+       | db.fax
+       | db.email
+       | db.uri
+       | db.otheraddr)*
+    }
+}
+div {
+  db.street.role.attribute = attribute role { text }
+  db.street.attlist =
+    db.street.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.street =
+    
+    ## A street address in an address
+    element street { db.street.attlist, db._text }
+}
+div {
+  db.pob.role.attribute = attribute role { text }
+  db.pob.attlist =
+    db.pob.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.pob =
+    
+    ## A post office box in an address
+    element pob { db.pob.attlist, db._text }
+}
+div {
+  db.postcode.role.attribute = attribute role { text }
+  db.postcode.attlist =
+    db.postcode.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.postcode =
+    
+    ## A postal code in an address
+    element postcode { db.postcode.attlist, db._text }
+}
+div {
+  db.city.role.attribute = attribute role { text }
+  db.city.attlist =
+    db.city.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.city =
+    
+    ## The name of a city in an address
+    element city { db.city.attlist, db._text }
+}
+div {
+  db.state.role.attribute = attribute role { text }
+  db.state.attlist =
+    db.state.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.state =
+    
+    ## A state or province in an address
+    element state { db.state.attlist, db._text }
+}
+div {
+  db.country.role.attribute = attribute role { text }
+  db.country.attlist =
+    db.country.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.country =
+    
+    ## The name of a country
+    element country { db.country.attlist, db._text }
+}
+div {
+  db.phone.role.attribute = attribute role { text }
+  db.phone.attlist =
+    db.phone.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.phone =
+    
+    ## A telephone number
+    element phone { db.phone.attlist, db._text }
+}
+div {
+  db.fax.role.attribute = attribute role { text }
+  db.fax.attlist =
+    db.fax.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.fax =
+    
+    ## A fax number
+    element fax { db.fax.attlist, db._text }
+}
+div {
+  db.otheraddr.role.attribute = attribute role { text }
+  db.otheraddr.attlist =
+    db.otheraddr.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.otheraddr =
+    
+    ## Uncategorized information in address
+    element otheraddr { db.otheraddr.attlist, db._text }
+}
+div {
+  db.affiliation.role.attribute = attribute role { text }
+  db.affiliation.attlist =
+    db.affiliation.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.affiliation =
+    
+    ## The institutional affiliation of an individual
+    element affiliation {
+      db.affiliation.attlist,
+      db.shortaffil?,
+      db.jobtitle*,
+      (db.org? | (db.orgname?, db.orgdiv*, db.address*))
+    }
+}
+div {
+  db.shortaffil.role.attribute = attribute role { text }
+  db.shortaffil.attlist =
+    db.shortaffil.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.shortaffil =
+    
+    ## A brief description of an affiliation
+    element shortaffil { db.shortaffil.attlist, db._text }
+}
+div {
+  db.jobtitle.role.attribute = attribute role { text }
+  db.jobtitle.attlist =
+    db.jobtitle.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.jobtitle =
+    
+    ## The title of an individual in an organization
+    element jobtitle { db.jobtitle.attlist, db._text }
+}
+div {
+  db.orgname.class.enumeration =
+    
+    ## A consortium
+    "consortium"
+    | 
+      ## A corporation
+      "corporation"
+    | 
+      ## An informal organization
+      "informal"
+    | 
+      ## A non-profit organization
+      "nonprofit"
+  db.orgname.class-enum.attribute =
+    
+    ## Specifies the nature of the organization
+    attribute class { db.orgname.class.enumeration }
+  db.orgname.class-other.attributes =
+    
+    ## Specifies the nature of the organization
+    attribute class {
+      
+      ## Indicates a non-standard organization class
+      "other"
+    },
+    
+    ## Identifies the non-standard nature of the organization
+    attribute otherclass { text }
+  db.orgname.class.attribute =
+    db.orgname.class-enum.attribute | db.orgname.class-other.attributes
+  db.orgname.role.attribute = attribute role { text }
+  db.orgname.attlist =
+    db.orgname.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.orgname.class.attribute?
+  db.orgname =
+    
+    ## The name of an organization
+    element orgname { db.orgname.attlist, db._text }
+}
+div {
+  db.orgdiv.role.attribute = attribute role { text }
+  db.orgdiv.attlist =
+    db.orgdiv.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.orgdiv =
+    
+    ## A division of an organization
+    element orgdiv { db.orgdiv.attlist, db.all.inlines* }
+}
+div {
+  db.artpagenums.role.attribute = attribute role { text }
+  db.artpagenums.attlist =
+    db.artpagenums.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.artpagenums =
+    
+    ## The page numbers of an article as published
+    element artpagenums { db.artpagenums.attlist, db._text }
+}
+div {
+  db.personname.role.attribute = attribute role { text }
+  db.personname.attlist =
+    db.personname.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.personname =
+    
+    ## The personal name of an individual
+    element personname {
+      db.personname.attlist,
+      (db._text
+       | (db.honorific
+          | db.firstname
+          | db.surname
+          | db.lineage
+          | db.othername)+
+       | (db.honorific
+          | db.givenname
+          | db.surname
+          | db.lineage
+          | db.othername)+)
+    }
+}
+db.person.author.contentmodel =
+  db.personname,
+  (db.personblurb
+   | db.affiliation
+   | db.email
+   | db.uri
+   | db.address
+   | db.contrib)*
+db.org.author.contentmodel =
+  db.orgname,
+  (db.orgdiv
+   | db.affiliation
+   | db.email
+   | db.uri
+   | db.address
+   | db.contrib)*
+db.credit.contentmodel =
+  db.person.author.contentmodel | db.org.author.contentmodel
+div {
+  db.author.role.attribute = attribute role { text }
+  db.author.attlist =
+    db.author.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.author =
+    
+    ## The name of an individual author
+    element author { db.author.attlist, db.credit.contentmodel }
+}
+div {
+  db.authorgroup.role.attribute = attribute role { text }
+  db.authorgroup.attlist =
+    db.authorgroup.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.authorgroup =
+    
+    ## Wrapper for author information when a document has multiple authors or collaborators
+    element authorgroup {
+      db.authorgroup.attlist, (db.author | db.editor | db.othercredit)+
+    }
+}
+div {
+  db.collab.role.attribute = attribute role { text }
+  db.collab.attlist =
+    db.collab.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.collab =
+    
+    ## Identifies a collaborator
+    element collab {
+      db.collab.attlist,
+      (db.person | db.personname | db.org | db.orgname)+,
+      db.affiliation*
+    }
+}
+div {
+  db.authorinitials.role.attribute = attribute role { text }
+  db.authorinitials.attlist =
+    db.authorinitials.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.authorinitials =
+    
+    ## The initials or other short identifier for an author
+    element authorinitials { db.authorinitials.attlist, db._text }
+}
+div {
+  db.person.role.attribute = attribute role { text }
+  db.person.attlist =
+    db.person.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.person =
+    
+    ## A person and associated metadata
+    element person {
+      db.person.attlist,
+      db.personname,
+      (db.address
+       | db.affiliation
+       | db.email
+       | db.uri
+       | db.personblurb)*
+    }
+}
+div {
+  db.org.role.attribute = attribute role { text }
+  db.org.attlist =
+    db.org.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.org =
+    
+    ## An organization and associated metadata
+    element org {
+      db.org.attlist,
+      db.orgname,
+      (db.address | db.affiliation | db.email | db.uri | db.orgdiv)*
+    }
+}
+div {
+  db.confgroup.role.attribute = attribute role { text }
+  db.confgroup.attlist =
+    db.confgroup.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.confgroup =
+    
+    ## A wrapper for document meta-information about a conference
+    element confgroup {
+      db.confgroup.attlist,
+      (db.confdates
+       | db.conftitle
+       | db.confnum
+       | db.confsponsor
+       | db.address)*
+    }
+}
+div {
+  db.confdates.role.attribute = attribute role { text }
+  db.confdates.attlist =
+    db.confdates.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.confdates =
+    
+    ## The dates of a conference for which a document was written
+    element confdates { db.confdates.attlist, db._text }
+}
+div {
+  db.conftitle.role.attribute = attribute role { text }
+  db.conftitle.attlist =
+    db.conftitle.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.conftitle =
+    
+    ## The title of a conference for which a document was written
+    element conftitle { db.conftitle.attlist, db._text }
+}
+div {
+  db.confnum.role.attribute = attribute role { text }
+  db.confnum.attlist =
+    db.confnum.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.confnum =
+    
+    ## An identifier, frequently numerical, associated with a conference for which a document was written
+    element confnum { db.confnum.attlist, db._text }
+}
+div {
+  db.confsponsor.role.attribute = attribute role { text }
+  db.confsponsor.attlist =
+    db.confsponsor.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.confsponsor =
+    
+    ## The sponsor of a conference for which a document was written
+    element confsponsor { db.confsponsor.attlist, db._text }
+}
+div {
+  db.contractnum.role.attribute = attribute role { text }
+  db.contractnum.attlist =
+    db.contractnum.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.contractnum =
+    
+    ## The contract number of a document
+    element contractnum { db.contractnum.attlist, db._text }
+}
+div {
+  db.contractsponsor.role.attribute = attribute role { text }
+  db.contractsponsor.attlist =
+    db.contractsponsor.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.contractsponsor =
+    
+    ## The sponsor of a contract
+    element contractsponsor { db.contractsponsor.attlist, db._text }
+}
+div {
+  db.copyright.role.attribute = attribute role { text }
+  db.copyright.attlist =
+    db.copyright.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.copyright =
+    
+    ## Copyright information about a document
+    element copyright { db.copyright.attlist, db.year+, db.holder* }
+}
+div {
+  db.year.role.attribute = attribute role { text }
+  db.year.attlist =
+    db.year.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.year =
+    
+    ## The year of publication of a document
+    element year { db.year.attlist, db._text }
+}
+div {
+  db.holder.role.attribute = attribute role { text }
+  db.holder.attlist =
+    db.holder.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.holder =
+    
+    ## The name of the individual or organization that holds a copyright
+    element holder { db.holder.attlist, db._text }
+}
+db.cover.contentmodel =
+  (db.para.blocks
+   | db.list.blocks
+   | db.informal.blocks
+   | db.publishing.blocks
+   | db.graphic.blocks
+   | db.technical.blocks
+   | db.verbatim.blocks
+   | db.bridgehead
+   | db.remark
+   | db.revhistory)
+  | db.synopsis.blocks
+div {
+  db.cover.role.attribute = attribute role { text }
+  db.cover.attlist =
+    db.cover.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.cover =
+    
+    ## Additional content for the cover of a publication
+    element cover { db.cover.attlist, db.cover.contentmodel+ }
+}
+db.date.contentmodel =
+  xsd:date | xsd:dateTime | xsd:gYearMonth | xsd:gYear | text
+div {
+  db.date.role.attribute = attribute role { text }
+  db.date.attlist =
+    db.date.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.date =
+    
+    ## The date of publication or revision of a document
+    element date { db.date.attlist, db.date.contentmodel }
+}
+div {
+  db.edition.role.attribute = attribute role { text }
+  db.edition.attlist =
+    db.edition.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.edition =
+    
+    ## The name or number of an edition of a document
+    element edition { db.edition.attlist, db._text }
+}
+div {
+  db.editor.role.attribute = attribute role { text }
+  db.editor.attlist =
+    db.editor.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.editor =
+    
+    ## The name of the editor of a document
+    element editor { db.editor.attlist, db.credit.contentmodel }
+}
+div {
+  db.biblioid.role.attribute = attribute role { text }
+  db.biblioid.attlist =
+    db.biblioid.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.biblio.class.attribute
+  db.biblioid =
+    
+    ## An identifier for a document
+    element biblioid { db.biblioid.attlist, db._text }
+}
+div {
+  db.citebiblioid.role.attribute = attribute role { text }
+  db.citebiblioid.attlist =
+    db.citebiblioid.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.biblio.class.attribute
+  db.citebiblioid =
+    
+    ## A citation of a bibliographic identifier
+    element citebiblioid { db.citebiblioid.attlist, db._text }
+}
+div {
+  db.bibliosource.role.attribute = attribute role { text }
+  db.bibliosource.attlist =
+    db.bibliosource.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.biblio.class.attribute
+  db.bibliosource =
+    
+    ## The source of a document
+    element bibliosource { db.bibliosource.attlist, db._text }
+}
+div {
+  db.bibliorelation.type.enumeration =
+    
+    ## The described resource pre-existed the referenced resource, which is essentially the same intellectual content presented in another format
+    "hasformat"
+    | 
+      ## The described resource includes the referenced resource either physically or logically
+      "haspart"
+    | 
+      ## The described resource has a version, edition, or adaptation, namely, the referenced resource
+      "hasversion"
+    | 
+      ## The described resource is the same intellectual content of the referenced resource, but presented in another format
+      "isformatof"
+    | 
+      ## The described resource is a physical or logical part of the referenced resource
+      "ispartof"
+    | 
+      ## The described resource is referenced, cited, or otherwise pointed to by the referenced resource
+      "isreferencedby"
+    | 
+      ## The described resource is supplanted, displaced, or superceded by the referenced resource
+      "isreplacedby"
+    | 
+      ## The described resource is required by the referenced resource, either physically or logically
+      "isrequiredby"
+    | 
+      ## The described resource is a version, edition, or adaptation of the referenced resource; changes in version imply substantive changes in content rather than differences in format
+      "isversionof"
+    | 
+      ## The described resource references, cites, or otherwise points to the referenced resource
+      "references"
+    | 
+      ## The described resource supplants, displaces, or supersedes the referenced resource
+      "replaces"
+    | 
+      ## The described resource requires the referenced resource to support its function, delivery, or coherence of content
+      "requires"
+  db.bibliorelation.type-enum.attribute =
+    
+    ## Identifies the type of relationship
+    attribute type { db.bibliorelation.type.enumeration }?
+  db.bibliorelation.type-other.attributes =
+    
+    ## Identifies the type of relationship
+    attribute type {
+      
+      ## The described resource has a non-standard relationship with the referenced resource
+      "othertype"
+    }?,
+    
+    ## A keyword that identififes the type of the non-standard relationship
+    attribute othertype { xsd:NMTOKEN }
+  db.bibliorelation.type.attribute =
+    db.bibliorelation.type-enum.attribute
+    | db.bibliorelation.type-other.attributes
+  db.bibliorelation.role.attribute = attribute role { text }
+  db.bibliorelation.attlist =
+    db.bibliorelation.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.biblio.class.attribute
+    & db.bibliorelation.type.attribute
+  db.bibliorelation =
+    
+    ## The relationship of a document to another
+    element bibliorelation { db.bibliorelation.attlist, db._text }
+}
+div {
+  db.bibliocoverage.spacial.enumeration =
+    
+    ## The DCMI Point identifies a point in space using its geographic coordinates
+    "dcmipoint"
+    | 
+      ## ISO 3166 Codes for the representation of names of countries
+      "iso3166"
+    | 
+      ## The DCMI Box identifies a region of space using its geographic limits
+      "dcmibox"
+    | 
+      ## The Getty Thesaurus of Geographic Names
+      "tgn"
+  db.bibliocoverage.spatial-enum.attribute =
+    
+    ## Specifies the type of spatial coverage
+    attribute spatial { db.bibliocoverage.spacial.enumeration }?
+  db.bibliocoverage.spatial-other.attributes =
+    
+    ## Specifies the type of spatial coverage
+    attribute spatial {
+      
+      ## Identifies a non-standard type of coverage
+      "otherspatial"
+    }?,
+    
+    ## A keyword that identifies the type of non-standard coverage
+    attribute otherspatial { xsd:NMTOKEN }
+  db.bibliocoverage.spatial.attribute =
+    db.bibliocoverage.spatial-enum.attribute
+    | db.bibliocoverage.spatial-other.attributes
+  db.bibliocoverage.temporal.enumeration =
+    
+    ## A specification of the limits of a time interval
+    "dcmiperiod"
+    | 
+      ## W3C Encoding rules for dates and times—a profile based on ISO 8601
+      "w3c-dtf"
+  db.bibliocoverage.temporal-enum.attribute =
+    
+    ## Specifies the type of temporal coverage
+    attribute temporal { db.bibliocoverage.temporal.enumeration }?
+  db.bibliocoverage.temporal-other.attributes =
+    
+    ## Specifies the type of temporal coverage
+    attribute temporal {
+      
+      ## Specifies a non-standard type of coverage
+      "othertemporal"
+    }?,
+    
+    ## A keyword that identifies the type of non-standard coverage
+    attribute othertemporal { xsd:NMTOKEN }
+  db.bibliocoverage.temporal.attribute =
+    db.bibliocoverage.temporal-enum.attribute
+    | db.bibliocoverage.temporal-other.attributes
+  db.bibliocoverage.coverage.attrib =
+    db.bibliocoverage.spatial.attribute
+    & db.bibliocoverage.temporal.attribute
+  db.bibliocoverage.role.attribute = attribute role { text }
+  db.bibliocoverage.attlist =
+    db.bibliocoverage.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.bibliocoverage.coverage.attrib
+  db.bibliocoverage =
+    
+    ## The spatial or temporal coverage of a document
+    element bibliocoverage { db.bibliocoverage.attlist, db._text }
+}
+div {
+  db.legalnotice.role.attribute = attribute role { text }
+  db.legalnotice.attlist =
+    db.legalnotice.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.legalnotice.info = db._info.title.only
+  db.legalnotice =
+    
+    ## A statement of legal obligations or requirements
+    element legalnotice {
+      db.legalnotice.attlist, db.legalnotice.info, db.all.blocks+
+    }
+}
+div {
+  db.othercredit.class.enumeration =
+    
+    ## A copy editor
+    "copyeditor"
+    | 
+      ## A graphic designer
+      "graphicdesigner"
+    | 
+      ## Some other contributor
+      "other"
+    | 
+      ## A production editor
+      "productioneditor"
+    | 
+      ## A technical editor
+      "technicaleditor"
+    | 
+      ## A translator
+      "translator"
+    | 
+      ## An indexer
+      "indexer"
+    | 
+      ## A proof-reader
+      "proofreader"
+    | 
+      ## A cover designer
+      "coverdesigner"
+    | 
+      ## An interior designer
+      "interiordesigner"
+    | 
+      ## An illustrator
+      "illustrator"
+    | 
+      ## A reviewer
+      "reviewer"
+    | 
+      ## A typesetter
+      "typesetter"
+    | 
+      ## A converter (a persons responsible for conversion, not an application)
+      "conversion"
+  db.othercredit.class-enum.attribute =
+    
+    ## Identifies the nature of the contributor
+    attribute class { db.othercredit.class.enumeration }?
+  db.othercredit.class-other.attribute =
+    
+    ## Identifies the nature of the non-standard contribution
+    attribute otherclass { xsd:NMTOKEN }
+  db.othercredit.class-other.attributes =
+    
+    ## Identifies the nature of the contributor
+    attribute class {
+      
+      ## Identifies a non-standard contribution
+      "other"
+    }
+    & db.othercredit.class-other.attribute
+  db.othercredit.class.attribute =
+    db.othercredit.class-enum.attribute
+    | db.othercredit.class-other.attributes
+  db.othercredit.role.attribute = attribute role { text }
+  db.othercredit.attlist =
+    db.othercredit.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.othercredit.class.attribute
+  db.othercredit =
+    
+    ## A person or entity, other than an author or editor, credited in a document
+    element othercredit {
+      db.othercredit.attlist, db.credit.contentmodel
+    }
+}
+div {
+  db.pagenums.role.attribute = attribute role { text }
+  db.pagenums.attlist =
+    db.pagenums.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.pagenums =
+    
+    ## The numbers of the pages in a book, for use in a bibliographic entry
+    element pagenums { db.pagenums.attlist, db._text }
+}
+div {
+  db.contrib.role.attribute = attribute role { text }
+  db.contrib.attlist =
+    db.contrib.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.contrib =
+    
+    ## A summary of the contributions made to a document by a credited source
+    element contrib { db.contrib.attlist, db.all.inlines* }
+}
+div {
+  db.honorific.role.attribute = attribute role { text }
+  db.honorific.attlist =
+    db.honorific.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.honorific =
+    
+    ## The title of a person
+    element honorific { db.honorific.attlist, db._text }
+}
+div {
+  db.firstname.role.attribute = attribute role { text }
+  db.firstname.attlist =
+    db.firstname.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.firstname =
+    
+    ## A given name of a person
+    element firstname { db.firstname.attlist, db._text }
+}
+div {
+  db.givenname.role.attribute = attribute role { text }
+  db.givenname.attlist =
+    db.givenname.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.givenname =
+    
+    ## The given name of a person
+    element givenname { db.givenname.attlist, db._text }
+}
+div {
+  db.surname.role.attribute = attribute role { text }
+  db.surname.attlist =
+    db.surname.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.surname =
+    
+    ## An inherited or family name; in western cultures the last name
+    element surname { db.surname.attlist, db._text }
+}
+div {
+  db.lineage.role.attribute = attribute role { text }
+  db.lineage.attlist =
+    db.lineage.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.lineage =
+    
+    ## The portion of a person's name indicating a relationship to ancestors
+    element lineage { db.lineage.attlist, db._text }
+}
+div {
+  db.othername.role.attribute = attribute role { text }
+  db.othername.attlist =
+    db.othername.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.othername =
+    
+    ## A component of a person's name that is not a first name, surname, or lineage
+    element othername { db.othername.attlist, db._text }
+}
+div {
+  db.printhistory.role.attribute = attribute role { text }
+  db.printhistory.attlist =
+    db.printhistory.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.printhistory =
+    
+    ## The printing history of a document
+    element printhistory { db.printhistory.attlist, db.para.blocks+ }
+}
+div {
+  db.pubdate.role.attribute = attribute role { text }
+  db.pubdate.attlist =
+    db.pubdate.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.pubdate =
+    
+    ## The date of publication of a document
+    element pubdate { db.pubdate.attlist, db.date.contentmodel }
+}
+div {
+  db.publisher.role.attribute = attribute role { text }
+  db.publisher.attlist =
+    db.publisher.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.publisher =
+    
+    ## The publisher of a document
+    element publisher {
+      db.publisher.attlist, db.publishername, db.address*
+    }
+}
+div {
+  db.publishername.role.attribute = attribute role { text }
+  db.publishername.attlist =
+    db.publishername.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.publishername =
+    
+    ## The name of the publisher of a document
+    element publishername { db.publishername.attlist, db._text }
+}
+div {
+  db.releaseinfo.role.attribute = attribute role { text }
+  db.releaseinfo.attlist =
+    db.releaseinfo.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.releaseinfo =
+    
+    ## Information about a particular release of a document
+    element releaseinfo { db.releaseinfo.attlist, db._text }
+}
+div {
+  db.revhistory.role.attribute = attribute role { text }
+  db.revhistory.attlist =
+    db.revhistory.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.revhistory.info = db._info.title.only
+  db.revhistory =
+    
+    ## A history of the revisions to a document
+    element revhistory {
+      db.revhistory.attlist, db.revhistory.info, db.revision+
+    }
+}
+div {
+  db.revision.role.attribute = attribute role { text }
+  db.revision.attlist =
+    db.revision.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.revision =
+    
+    ## An entry describing a single revision in the history of the revisions to a document
+    element revision {
+      db.revision.attlist,
+      db.revnumber?,
+      db.date,
+      (db.authorinitials | db.author)*,
+      (db.revremark | db.revdescription)?
+    }
+}
+div {
+  db.revnumber.role.attribute = attribute role { text }
+  db.revnumber.attlist =
+    db.revnumber.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.revnumber =
+    
+    ## A document revision number
+    element revnumber { db.revnumber.attlist, db._text }
+}
+div {
+  db.revremark.role.attribute = attribute role { text }
+  db.revremark.attlist =
+    db.revremark.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.revremark =
+    
+    ## A description of a revision to a document
+    element revremark { db.revremark.attlist, db._text }
+}
+div {
+  db.revdescription.role.attribute = attribute role { text }
+  db.revdescription.attlist =
+    db.revdescription.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.revdescription =
+    
+    ## A extended description of a revision to a document
+    element revdescription { db.revdescription.attlist, db.all.blocks* }
+}
+div {
+  db.seriesvolnums.role.attribute = attribute role { text }
+  db.seriesvolnums.attlist =
+    db.seriesvolnums.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.seriesvolnums =
+    
+    ## Numbers of the volumes in a series of books
+    element seriesvolnums { db.seriesvolnums.attlist, db._text }
+}
+div {
+  db.volumenum.role.attribute = attribute role { text }
+  db.volumenum.attlist =
+    db.volumenum.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.volumenum =
+    
+    ## The volume number of a document in a set (as of books in a set or articles in a journal)
+    element volumenum { db.volumenum.attlist, db._text }
+}
+div {
+  db.issuenum.role.attribute = attribute role { text }
+  db.issuenum.attlist =
+    db.issuenum.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.issuenum =
+    
+    ## The number of an issue of a journal
+    element issuenum { db.issuenum.attlist, db._text }
+}
+div {
+  db.package.role.attribute = attribute role { text }
+  db.package.attlist =
+    db.package.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.package =
+    
+    ## A software or application package
+    element package { db.package.attlist, db._text }
+}
+div {
+  db.email.role.attribute = attribute role { text }
+  db.email.attlist =
+    db.email.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.email =
+    
+    ## An email address
+    element email { db.email.attlist, db._text }
+}
+div {
+  db.lineannotation.role.attribute = attribute role { text }
+  db.lineannotation.attlist =
+    db.lineannotation.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.lineannotation =
+    
+    ## A comment on a line in a verbatim listing
+    element lineannotation { db.lineannotation.attlist, db._text }
+}
+div {
+  db.parameter.class.enumeration =
+    
+    ## A command
+    "command"
+    | 
+      ## A function
+      "function"
+    | 
+      ## An option
+      "option"
+  db.parameter.class.attribute =
+    
+    ## Identifies the class of parameter
+    attribute class { db.parameter.class.enumeration }
+  db.parameter.role.attribute = attribute role { text }
+  db.parameter.attlist =
+    db.parameter.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.parameter.class.attribute?
+  db.parameter =
+    
+    ## A value or a symbolic reference to a value
+    element parameter { db.parameter.attlist, db._text }
+}
+db.replaceable.inlines = db._text | db.co
+div {
+  db.replaceable.class.enumeration =
+    
+    ## A command
+    "command"
+    | 
+      ## A function
+      "function"
+    | 
+      ## An option
+      "option"
+    | 
+      ## A parameter
+      "parameter"
+  db.replaceable.class.attribute =
+    
+    ## Identifies the nature of the replaceable text
+    attribute class { db.replaceable.class.enumeration }
+  db.replaceable.role.attribute = attribute role { text }
+  db.replaceable.attlist =
+    db.replaceable.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.replaceable.class.attribute?
+  db.replaceable =
+    
+    ## Content that may or must be replaced by the user
+    element replaceable {
+      db.replaceable.attlist, db.replaceable.inlines*
+    }
+}
+div {
+  db.uri.type.attribute =
+    
+    ## Identifies the type of URI specified
+    attribute type { text }?
+  db.uri.role.attribute = attribute role { text }
+  db.uri.attlist =
+    db.uri.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.uri.type.attribute
+  db.uri =
+    
+    ## A Uniform Resource Identifier
+    element uri { db.uri.attlist, db._text }
+}
+div {
+  db.abbrev.role.attribute = attribute role { text }
+  db.abbrev.attlist =
+    db.abbrev.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.abbrev =
+    
+    ## An abbreviation, especially one followed by a period
+    element abbrev {
+      db.abbrev.attlist,
+      (db._text | db.superscript | db.subscript | db.trademark)*
+    }
+}
+div {
+  db.acronym.role.attribute = attribute role { text }
+  db.acronym.attlist =
+    db.acronym.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.acronym =
+    
+    ## An often pronounceable word made from the initial (or selected) letters of a name or phrase
+    element acronym {
+      db.acronym.attlist,
+      (db._text | db.superscript | db.subscript | db.trademark)*
+    }
+}
+div {
+  db.citation.role.attribute = attribute role { text }
+  db.citation.attlist =
+    db.citation.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.citation =
+    
+    ## An inline bibliographic reference to another published work
+    element citation { db.citation.attlist, db.all.inlines* }
+}
+div {
+  db.citerefentry.role.attribute = attribute role { text }
+  db.citerefentry.attlist =
+    db.citerefentry.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.citerefentry =
+    
+    ## A citation to a reference page
+    element citerefentry {
+      db.citerefentry.attlist, db.refentrytitle, db.manvolnum?
+    }
+}
+div {
+  db.refentrytitle.role.attribute = attribute role { text }
+  db.refentrytitle.attlist =
+    db.refentrytitle.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.refentrytitle =
+    
+    ## The title of a reference page
+    element refentrytitle { db.refentrytitle.attlist, db.all.inlines* }
+}
+div {
+  db.manvolnum.role.attribute = attribute role { text }
+  db.manvolnum.attlist =
+    db.manvolnum.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.manvolnum =
+    
+    ## A reference volume number
+    element manvolnum { db.manvolnum.attlist, db._text }
+}
+div {
+  db.citetitle.pubwork.enumeration =
+    
+    ## An article
+    "article"
+    | 
+      ## A bulletin board system
+      "bbs"
+    | 
+      ## A book
+      "book"
+    | 
+      ## A CD-ROM
+      "cdrom"
+    | 
+      ## A chapter (as of a book)
+      "chapter"
+    | 
+      ## A DVD
+      "dvd"
+    | 
+      ## An email message
+      "emailmessage"
+    | 
+      ## A gopher page
+      "gopher"
+    | 
+      ## A journal
+      "journal"
+    | 
+      ## A manuscript
+      "manuscript"
+    | 
+      ## A posting to a newsgroup
+      "newsposting"
+    | 
+      ## A part (as of a book)
+      "part"
+    | 
+      ## A reference entry
+      "refentry"
+    | 
+      ## A section (as of a book or article)
+      "section"
+    | 
+      ## A series
+      "series"
+    | 
+      ## A set (as of books)
+      "set"
+    | 
+      ## A web page
+      "webpage"
+    | 
+      ## A wiki page
+      "wiki"
+  db.citetitle.pubwork.attribute =
+    
+    ## Identifies the nature of the publication being cited
+    attribute pubwork { db.citetitle.pubwork.enumeration }
+  db.citetitle.role.attribute = attribute role { text }
+  db.citetitle.attlist =
+    db.citetitle.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.citetitle.pubwork.attribute?
+  db.citetitle =
+    
+    ## The title of a cited work
+    element citetitle { db.citetitle.attlist, db.all.inlines* }
+}
+div {
+  db.emphasis.role.attribute = attribute role { text }
+  db.emphasis.attlist =
+    db.emphasis.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.emphasis =
+    
+    ## Emphasized text
+    element emphasis { db.emphasis.attlist, db.all.inlines* }
+}
+div {
+  db._emphasis =
+    
+    ## A limited span of emphasized text
+    element emphasis { db.emphasis.attlist, db._text }
+}
+div {
+  db.foreignphrase.role.attribute = attribute role { text }
+  db.foreignphrase.attlist =
+    db.foreignphrase.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.foreignphrase =
+    
+    ## A word or phrase in a language other than the primary language of the document
+    element foreignphrase {
+      db.foreignphrase.attlist, (text | db.general.inlines)*
+    }
+}
+div {
+  db._foreignphrase.role.attribute = attribute role { text }
+  db._foreignphrase.attlist =
+    db._foreignphrase.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db._foreignphrase =
+    
+    ## A limited word or phrase in a language other than the primary language of the document
+    element foreignphrase { db._foreignphrase.attlist, db._text }
+}
+div {
+  db.phrase.role.attribute = attribute role { text }
+  db.phrase.attlist =
+    db.phrase.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.phrase =
+    
+    ## A span of text
+    element phrase { db.phrase.attlist, db.all.inlines* }
+}
+div {
+  db._phrase =
+    
+    ## A limited span of text
+    element phrase { db.phrase.attlist, db._text }
+}
+div {
+  db.quote.role.attribute = attribute role { text }
+  db.quote.attlist =
+    db.quote.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.quote =
+    
+    ## An inline quotation
+    element quote { db.quote.attlist, db.all.inlines* }
+}
+div {
+  db._quote.role.attribute = attribute role { text }
+  db._quote.attlist =
+    db._quote.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db._quote =
+    
+    ## A limited inline quotation
+    element quote { db._quote.attlist, db._text }
+}
+div {
+  db.subscript.role.attribute = attribute role { text }
+  db.subscript.attlist =
+    db.subscript.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.subscript =
+    
+    ## A subscript (as in H2
+    ## O, the molecular formula for water)
+    element subscript { db.subscript.attlist, db._text }
+}
+div {
+  db.superscript.role.attribute = attribute role { text }
+  db.superscript.attlist =
+    db.superscript.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.superscript =
+    
+    ## A superscript (as in x2
+    ## , the mathematical notation for x multiplied by itself)
+    element superscript { db.superscript.attlist, db._text }
+}
+div {
+  db.trademark.class.enumeration =
+    
+    ## A copyright
+    "copyright"
+    | 
+      ## A registered copyright
+      "registered"
+    | 
+      ## A service
+      "service"
+    | 
+      ## A trademark
+      "trade"
+  db.trademark.class.attribute =
+    
+    ## Identifies the class of trade mark
+    attribute class { db.trademark.class.enumeration }
+  db.trademark.role.attribute = attribute role { text }
+  db.trademark.attlist =
+    db.trademark.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.trademark.class.attribute?
+  db.trademark =
+    
+    ## A trademark
+    element trademark { db.trademark.attlist, db._text }
+}
+div {
+  db.wordasword.role.attribute = attribute role { text }
+  db.wordasword.attlist =
+    db.wordasword.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.wordasword =
+    
+    ## A word meant specifically as a word and not representing anything else
+    element wordasword { db.wordasword.attlist, db._text }
+}
+div {
+  db.footnoteref.role.attribute = attribute role { text }
+  db.footnoteref.label.attribute = db.label.attribute
+  db.footnoteref.attlist =
+    db.footnoteref.role.attribute?
+    & db.common.attributes
+    & db.linkend.attribute
+    & db.footnoteref.label.attribute?
+  db.footnoteref =
+    
+    ## A cross reference to a footnote (a footnote mark)
+    [
+      s:pattern [
+        name = "Footnote reference type constraint"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:footnoteref"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test =
+              "local-name(//*[@xml:id=current()/@linkend]) = 'footnote' and namespace-uri(//*[@xml:id=current()/@linkend]) = 'http://docbook.org/ns/docbook'"
+            "@linkend on footnoteref must point to a footnote."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element footnoteref { db.footnoteref.attlist, empty }
+}
+div {
+  db.xref.role.attribute = attribute role { text }
+  db.xref.xrefstyle.attribute = db.xrefstyle.attribute
+  db.xref.endterm.attribute = db.endterm.attribute
+  db.xref.attlist =
+    db.xref.role.attribute?
+    & db.common.attributes
+    & db.common.req.linking.attributes
+    & db.xref.xrefstyle.attribute?
+    & db.xref.endterm.attribute?
+  db.xref =
+    
+    ## A cross reference to another part of the document
+    element xref { db.xref.attlist, empty }
+}
+div {
+  db.link.role.attribute = attribute role { text }
+  db.link.xrefstyle.attribute = db.xrefstyle.attribute
+  db.link.endterm.attribute = db.endterm.attribute
+  db.link.attlist =
+    db.link.role.attribute?
+    & db.common.attributes
+    & db.common.req.linking.attributes
+    & db.link.xrefstyle.attribute?
+    & db.link.endterm.attribute?
+  db.link =
+    
+    ## A hypertext link
+    element link { db.link.attlist, db.all.inlines* }
+}
+div {
+  db.olink.role.attribute = attribute role { text }
+  db.olink.xrefstyle.attribute = db.xrefstyle.attribute
+  db.olink.localinfo.attribute =
+    
+    ## Holds additional information that may be used by the application when resolving the link
+    attribute localinfo { text }
+  db.olink.targetdoc.attribute =
+    
+    ## Specifies the URI of the document in which the link target appears
+    attribute targetdoc { xsd:anyURI }
+  db.olink.targetptr.attribute =
+    
+    ## Specifies the location of the link target in the document
+    attribute targetptr { text }
+  db.olink.type.attribute =
+    
+    ## Identifies application-specific customization of the link behavior
+    attribute type { text }
+  db.olink.attlist =
+    db.common.attributes
+    & db.olink.targetdoc.attribute?
+    & db.olink.role.attribute?
+    & db.olink.xrefstyle.attribute?
+    & db.olink.localinfo.attribute?
+    & db.olink.targetptr.attribute?
+    & db.olink.type.attribute?
+  db.olink =
+    
+    ## A link that addresses its target indirectly
+    element olink { db.olink.attlist, db.all.inlines* }
+}
+div {
+  db.anchor.role.attribute = attribute role { text }
+  db.anchor.attlist =
+    db.anchor.role.attribute? & db.common.idreq.attributes
+  db.anchor =
+    
+    ## A spot in the document
+    element anchor { db.anchor.attlist, empty }
+}
+div {
+  db.alt.role.attribute = attribute role { text }
+  db.alt.attlist = db.alt.role.attribute? & db.common.attributes
+  db.alt =
+    
+    ## A text-only annotation, often used for accessibility
+    element alt { db.alt.attlist, (text | db.inlinemediaobject)* }
+}
+db.status.attribute =
+  
+  ## Identifies the editorial or publication status of the element on which it occurs
+  attribute status { text }
+db.toplevel.sections =
+  ((db.section+, db.simplesect*) | db.simplesect+)
+  | (db.sect1+, db.simplesect*)
+  | db.refentry+
+db.toplevel.blocks.or.sections =
+  (db.all.blocks+, db.toplevel.sections?) | db.toplevel.sections
+db.recursive.sections =
+  ((db.section+, db.simplesect*) | db.simplesect+)
+  | db.refentry+
+db.recursive.blocks.or.sections =
+  (db.all.blocks+, db.recursive.sections?) | db.recursive.sections
+db.divisions = db.part | db.reference
+db.components =
+  db.dedication
+  | db.acknowledgements
+  | db.preface
+  | db.chapter
+  | db.appendix
+  | db.article
+  | db.colophon
+db.navigation.components =
+  notAllowed | db.glossary | db.bibliography | db.index | db.toc
+db.component.contentmodel =
+  db.navigation.components*,
+  db.toplevel.blocks.or.sections,
+  db.navigation.components*
+db.setindex.components = notAllowed | db.setindex
+db.toc.components = notAllowed | db.toc
+db.set.components = db.set | db.book
+div {
+  db.set.status.attribute = db.status.attribute
+  db.set.role.attribute = attribute role { text }
+  db.set.attlist =
+    db.set.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.label.attribute?
+    & db.set.status.attribute?
+  db.set.info = db._info.title.req
+  db.set =
+    
+    ## A collection of books
+    element set {
+      db.set.attlist,
+      db.set.info,
+      db.toc.components?,
+      db.set.components+,
+      db.setindex.components?
+    }
+}
+db.book.components =
+  (db.navigation.components | db.components | db.divisions)* | db.topic*
+div {
+  db.book.status.attribute = db.status.attribute
+  db.book.role.attribute = attribute role { text }
+  db.book.attlist =
+    db.book.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.label.attribute?
+    & db.book.status.attribute?
+  db.book.info = db._info
+  db.book =
+    
+    ## A book
+    element book { db.book.attlist, db.book.info, db.book.components }
+}
+div {
+  db.dedication.status.attribute = db.status.attribute
+  db.dedication.role.attribute = attribute role { text }
+  db.dedication.attlist =
+    db.dedication.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.label.attribute?
+    & db.dedication.status.attribute?
+  db.dedication.info = db._info
+  db.dedication =
+    
+    ## The dedication of a book or other component
+    element dedication {
+      db.dedication.attlist, db.dedication.info, db.all.blocks+
+    }
+}
+div {
+  db.acknowledgements.status.attribute = db.status.attribute
+  db.acknowledgements.role.attribute = attribute role { text }
+  db.acknowledgements.attlist =
+    db.acknowledgements.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.label.attribute?
+    & db.acknowledgements.status.attribute?
+  db.acknowledgements.info = db._info
+  db.acknowledgements =
+    
+    ## Acknowledgements of a book or other component
+    element acknowledgements {
+      db.acknowledgements.attlist,
+      db.acknowledgements.info,
+      db.all.blocks+
+    }
+}
+div {
+  db.colophon.status.attribute = db.status.attribute
+  db.colophon.role.attribute = attribute role { text }
+  db.colophon.attlist =
+    db.colophon.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.label.attribute?
+    & db.colophon.status.attribute?
+  db.colophon.info = db._info
+  db.colophon =
+    
+    ## Text at the back of a book describing facts about its production
+    element colophon {
+      db.colophon.attlist,
+      db.colophon.info,
+      ((db.all.blocks+, db.simplesect*)
+       | (db.all.blocks*, db.simplesect+))
+    }
+}
+db.appendix.contentmodel = db.component.contentmodel | db.topic+
+div {
+  db.appendix.status.attribute = db.status.attribute
+  db.appendix.role.attribute = attribute role { text }
+  db.appendix.attlist =
+    db.appendix.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.label.attribute?
+    & db.appendix.status.attribute?
+  db.appendix.info = db._info.title.req
+  db.appendix =
+    
+    ## An appendix in a book or article
+    element appendix {
+      db.appendix.attlist, db.appendix.info, db.appendix.contentmodel?
+    }
+}
+db.chapter.contentmodel = db.component.contentmodel | db.topic+
+div {
+  db.chapter.status.attribute = db.status.attribute
+  db.chapter.role.attribute = attribute role { text }
+  db.chapter.attlist =
+    db.chapter.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.label.attribute?
+    & db.chapter.status.attribute?
+  db.chapter.info = db._info.title.req
+  db.chapter =
+    
+    ## A chapter, as of a book
+    element chapter {
+      db.chapter.attlist, db.chapter.info, db.chapter.contentmodel?
+    }
+}
+db.part.components =
+  (db.navigation.components | db.components)
+  | (db.refentry | db.reference)
+db.part.contentmodel = db.part.components+ | db.topic+
+div {
+  db.part.status.attribute = db.status.attribute
+  db.part.role.attribute = attribute role { text }
+  db.part.attlist =
+    db.part.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.label.attribute?
+    & db.part.status.attribute?
+  db.part.info = db._info.title.req
+  db.part =
+    
+    ## A division in a book
+    element part {
+      db.part.attlist,
+      db.part.info,
+      db.partintro?,
+      db.part.contentmodel?
+    }
+}
+div {
+  db.preface.status.attribute = db.status.attribute
+  db.preface.role.attribute = attribute role { text }
+  db.preface.attlist =
+    db.preface.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.label.attribute?
+    & db.preface.status.attribute?
+  db.preface.info = db._info.title.req
+  db.preface =
+    
+    ## Introductory matter preceding the first chapter of a book
+    element preface {
+      db.preface.attlist, db.preface.info, db.component.contentmodel?
+    }
+}
+div {
+  db.partintro.status.attribute = db.status.attribute
+  db.partintro.role.attribute = attribute role { text }
+  db.partintro.attlist =
+    db.partintro.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.label.attribute?
+    & db.partintro.status.attribute?
+  db.partintro.info = db._info
+  db.partintro =
+    
+    ## An introduction to the contents of a part
+    element partintro {
+      db.partintro.attlist,
+      db.partintro.info,
+      db.toplevel.blocks.or.sections?
+    }
+}
+div {
+  db.section.status.attribute = db.status.attribute
+  db.section.role.attribute = attribute role { text }
+  db.section.attlist =
+    db.section.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.label.attribute?
+    & db.section.status.attribute?
+  db.section.info = db._info.title.req
+  db.section =
+    
+    ## A recursive section
+    element section {
+      db.section.attlist,
+      db.section.info,
+      db.recursive.blocks.or.sections?,
+      db.navigation.components*
+    }
+}
+div {
+  db.simplesect.status.attribute = db.status.attribute
+  db.simplesect.role.attribute = attribute role { text }
+  db.simplesect.attlist =
+    db.simplesect.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.label.attribute?
+    & db.simplesect.status.attribute?
+  db.simplesect.info = db._info.title.req
+  db.simplesect =
+    
+    ## A section of a document with no subdivisions
+    element simplesect {
+      db.simplesect.attlist, db.simplesect.info, db.all.blocks*
+    }
+}
+db.article.components = db.toplevel.sections
+db.article.navcomponents =
+  db.navigation.components
+  | db.acknowledgements
+  | db.dedication
+  | db.appendix
+  | db.colophon
+div {
+  db.article.status.attribute = db.status.attribute
+  db.article.class.enumeration =
+    
+    ## A collection of frequently asked questions.
+    "faq"
+    | 
+      ## An article in a journal or other periodical.
+      "journalarticle"
+    | 
+      ## A description of a product.
+      "productsheet"
+    | 
+      ## A specification.
+      "specification"
+    | 
+      ## A technical report.
+      "techreport"
+    | 
+      ## A white paper.
+      "whitepaper"
+  db.article.class.attribute =
+    
+    ## Identifies the nature of the article
+    attribute class { db.article.class.enumeration }
+  db.article.role.attribute = attribute role { text }
+  db.article.attlist =
+    db.article.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.label.attribute?
+    & db.article.status.attribute?
+    & db.article.class.attribute?
+  db.article.info = db._info.title.req
+  db.article =
+    
+    ## An article
+    element article {
+      db.article.attlist,
+      db.article.info,
+      db.article.navcomponents*,
+      ((db.all.blocks+, db.article.components?)
+       | db.article.components),
+      db.article.navcomponents*
+    }
+}
+db.annotations.attribute =
+  
+  ## Identifies one or more annotations that apply to this element
+  attribute annotations { text }
+div {
+  db.annotation.role.attribute = attribute role { text }
+  db.annotation.annotates.attribute =
+    
+    ## Identifies one ore more elements to which this annotation applies
+    attribute annotates { text }
+  db.annotation.attlist =
+    db.annotation.role.attribute?
+    & db.annotation.annotates.attribute?
+    & db.common.attributes
+  db.annotation.info = db._info.title.only
+  db.annotation =
+    
+    ## An annotation
+    [
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:annotation"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:annotation)"
+            "annotation must not occur among the children or descendants of annotation"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element annotation {
+      db.annotation.attlist, db.annotation.info, db.all.blocks+
+    }
+}
+db.xlink.extended.type.attribute =
+  
+  ## Identifies the XLink extended link type
+  [
+    s:pattern [
+      name = "XLink extended placement"
+      "\x{a}" ~
+      "            "
+      s:rule [
+        context = "*[@xlink:type='extended']"
+        "\x{a}" ~
+        "               "
+        s:assert [
+          test = "not(parent::*[@xlink:type='extended'])"
+          "An XLink extended type element may not occur as the direct child of an XLink extended type element."
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      "\x{a}" ~
+      "         "
+    ]
+  ]
+  attribute xlink:type {
+    
+    ## An XLink extended link type
+    "extended"
+  }
+db.xlink.locator.type.attribute =
+  
+  ## Identifies the XLink locator link type
+  [
+    s:pattern [
+      name = "XLink locator placement"
+      "\x{a}" ~
+      "            "
+      s:rule [
+        context = "*[@xlink:type='locator']"
+        "\x{a}" ~
+        "               "
+        s:assert [
+          test = "not(parent::*[@xlink:type='extended'])"
+          "An XLink locator type element must occur as the direct child of an XLink extended type element."
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      "\x{a}" ~
+      "         "
+    ]
+  ]
+  attribute xlink:type {
+    
+    ## An XLink locator link type
+    "locator"
+  }
+db.xlink.arc.type.attribute =
+  
+  ## Identifies the XLink arc link type
+  [
+    s:pattern [
+      name = "XLink arc placement"
+      "\x{a}" ~
+      "            "
+      s:rule [
+        context = "*[@xlink:type='arc']"
+        "\x{a}" ~
+        "               "
+        s:assert [
+          test = "parent::*[@xlink:type='extended']"
+          "An XLink arc type element must occur as the direct child of an XLink extended type element."
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      "\x{a}" ~
+      "         "
+    ]
+  ]
+  attribute xlink:type {
+    
+    ## An XLink arc link type
+    "arc"
+  }
+db.xlink.resource.type.attribute =
+  
+  ## Identifies the XLink resource link type
+  [
+    s:pattern [
+      name = "XLink resource placement"
+      "\x{a}" ~
+      "            "
+      s:rule [
+        context = "*[@xlink:type='resource']"
+        "\x{a}" ~
+        "               "
+        s:assert [
+          test = "not(parent::*[@xlink:type='extended'])"
+          "An XLink resource type element must occur as the direct child of an XLink extended type element."
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      "\x{a}" ~
+      "         "
+    ]
+  ]
+  attribute xlink:type {
+    
+    ## An XLink resource link type
+    "resource"
+  }
+db.xlink.title.type.attribute =
+  
+  ## Identifies the XLink title link type
+  [
+    s:pattern [
+      name = "XLink title placement"
+      "\x{a}" ~
+      "            "
+      s:rule [
+        context = "*[@xlink:type='title']"
+        "\x{a}" ~
+        "               "
+        s:assert [
+          test =
+            "not(parent::*[@xlink:type='extended']) and not(parent::*[@xlink:type='locator']) and not(parent::*[@xlink:type='arc'])"
+          "An XLink title type element must occur as the direct child of an XLink extended, locator, or arc type element."
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      "\x{a}" ~
+      "         "
+    ]
+  ]
+  attribute xlink:type {
+    
+    ## An XLink title link type
+    "title"
+  }
+db.xlink.extended.link.attributes =
+  db.xlink.extended.type.attribute
+  & db.xlink.role.attribute?
+  & db.xlink.title.attribute?
+db.xlink.locator.link.attributes =
+  db.xlink.locator.type.attribute
+  & db.xlink.href.attribute
+  & db.xlink.role.attribute?
+  & db.xlink.title.attribute?
+  & db.xlink.label.attribute?
+db.xlink.arc.link.attributes =
+  db.xlink.arc.type.attribute
+  & db.xlink.arcrole.attribute?
+  & db.xlink.title.attribute?
+  & db.xlink.show.attribute?
+  & db.xlink.actuate.attribute?
+  & db.xlink.from.attribute?
+  & db.xlink.to.attribute?
+db.xlink.resource.link.attributes =
+  db.xlink.resource.type.attribute
+  & db.xlink.role.attribute?
+  & db.xlink.title.attribute?
+  & db.xlink.label.attribute?
+db.xlink.title.link.attributes = db.xlink.title.type.attribute
+db.xlink.from.attribute =
+  
+  ## Specifies the XLink traversal-from
+  attribute xlink:from { xsd:NMTOKEN }
+db.xlink.label.attribute =
+  
+  ## Specifies the XLink label
+  attribute xlink:label { xsd:NMTOKEN }
+db.xlink.to.attribute =
+  
+  ## Specifies the XLink traversal-to
+  attribute xlink:to { xsd:NMTOKEN }
+div {
+  db.extendedlink.role.attribute = attribute role { text }
+  db.extendedlink.attlist =
+    db.extendedlink.role.attribute?
+    & db.common.attributes
+    & 
+      ## Identifies the XLink link type 
+      [ a:defaultValue = "extended" ]
+      attribute xlink:type {
+        
+        ## An XLink extended link
+        "extended"
+      }?
+    & db.xlink.role.attribute?
+    & db.xlink.title.attribute?
+  db.extendedlink =
+    
+    ## An XLink extended link
+    element extendedlink {
+      db.extendedlink.attlist, (db.locator | db.arc | db.link)+
+    }
+}
+div {
+  db.locator.role.attribute = attribute role { text }
+  db.locator.attlist =
+    db.locator.role.attribute?
+    & db.common.attributes
+    & 
+      ## Identifies the XLink link type 
+      [ a:defaultValue = "locator" ]
+      attribute xlink:type {
+        
+        ## An XLink locator link
+        "locator"
+      }?
+    & db.xlink.href.attribute
+    & db.xlink.role.attribute?
+    & db.xlink.title.attribute?
+    & db.xlink.label.attribute?
+  db.locator =
+    
+    ## An XLink locator in an extendedlink
+    element locator { db.locator.attlist, empty }
+}
+div {
+  db.arc.role.attribute = attribute role { text }
+  db.arc.attlist =
+    db.arc.role.attribute?
+    & db.common.attributes
+    & 
+      ## Identifies the XLink link type 
+      [ a:defaultValue = "arc" ]
+      attribute xlink:type {
+        
+        ## An XLink arc link
+        "arc"
+      }?
+    & db.xlink.arcrole.attribute?
+    & db.xlink.title.attribute?
+    & db.xlink.show.attribute?
+    & db.xlink.actuate.attribute?
+    & db.xlink.from.attribute?
+    & db.xlink.to.attribute?
+  db.arc =
+    
+    ## An XLink arc in an extendedlink
+    element arc { db.arc.attlist, empty }
+}
+db.sect1.sections = (db.sect2+, db.simplesect*) | db.simplesect+
+div {
+  db.sect1.status.attribute = db.status.attribute
+  db.sect1.role.attribute = attribute role { text }
+  db.sect1.attlist =
+    db.sect1.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.label.attribute?
+    & db.sect1.status.attribute?
+  db.sect1.info = db._info.title.req
+  db.sect1 =
+    
+    ## A top-level section of document
+    element sect1 {
+      db.sect1.attlist,
+      db.sect1.info,
+      ((db.all.blocks+, db.sect1.sections?) | db.sect1.sections)?,
+      db.navigation.components*
+    }
+}
+db.sect2.sections = (db.sect3+, db.simplesect*) | db.simplesect+
+div {
+  db.sect2.status.attribute = db.status.attribute
+  db.sect2.role.attribute = attribute role { text }
+  db.sect2.attlist =
+    db.sect2.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.label.attribute?
+    & db.sect2.status.attribute?
+  db.sect2.info = db._info.title.req
+  db.sect2 =
+    
+    ## A subsection within a sect1
+    element sect2 {
+      db.sect2.attlist,
+      db.sect2.info,
+      ((db.all.blocks+, db.sect2.sections?) | db.sect2.sections)?,
+      db.navigation.components*
+    }
+}
+db.sect3.sections = (db.sect4+, db.simplesect*) | db.simplesect+
+div {
+  db.sect3.status.attribute = db.status.attribute
+  db.sect3.role.attribute = attribute role { text }
+  db.sect3.attlist =
+    db.sect3.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.label.attribute?
+    & db.sect3.status.attribute?
+  db.sect3.info = db._info.title.req
+  db.sect3 =
+    
+    ## A subsection within a sect2
+    element sect3 {
+      db.sect3.attlist,
+      db.sect3.info,
+      ((db.all.blocks+, db.sect3.sections?) | db.sect3.sections)?,
+      db.navigation.components*
+    }
+}
+db.sect4.sections = (db.sect5+, db.simplesect*) | db.simplesect+
+div {
+  db.sect4.status.attribute = db.status.attribute
+  db.sect4.role.attribute = attribute role { text }
+  db.sect4.attlist =
+    db.sect4.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.label.attribute?
+    & db.sect4.status.attribute?
+  db.sect4.info = db._info.title.req
+  db.sect4 =
+    
+    ## A subsection within a sect3
+    element sect4 {
+      db.sect4.attlist,
+      db.sect4.info,
+      ((db.all.blocks+, db.sect4.sections?) | db.sect4.sections)?,
+      db.navigation.components*
+    }
+}
+db.sect5.sections = db.simplesect+
+div {
+  db.sect5.status.attribute = db.status.attribute
+  db.sect5.role.attribute = attribute role { text }
+  db.sect5.attlist =
+    db.sect5.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.label.attribute?
+    & db.sect5.status.attribute?
+  db.sect5.info = db._info.title.req
+  db.sect5 =
+    
+    ## A subsection within a sect4
+    element sect5 {
+      db.sect5.attlist,
+      db.sect5.info,
+      ((db.all.blocks+, db.sect5.sections?) | db.sect5.sections)?,
+      db.navigation.components*
+    }
+}
+db.toplevel.refsection = db.refsection+ | db.refsect1+
+db.secondlevel.refsection = db.refsection+ | db.refsect2+
+db.reference.components = db.refentry
+div {
+  db.reference.status.attribute = db.status.attribute
+  db.reference.role.attribute = attribute role { text }
+  db.reference.attlist =
+    db.reference.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.reference.status.attribute?
+    & db.label.attribute?
+  db.reference.info = db._info.title.req
+  db.reference =
+    
+    ## A collection of reference entries
+    element reference {
+      db.reference.attlist,
+      db.reference.info,
+      db.partintro?,
+      db.reference.components*
+    }
+}
+div {
+  db.refentry.status.attribute = db.status.attribute
+  db.refentry.role.attribute = attribute role { text }
+  db.refentry.attlist =
+    db.refentry.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.refentry.status.attribute?
+    & db.label.attribute?
+  db.refentry.info = db._info.title.forbidden
+  db.refentry =
+    
+    ## A reference page (originally a UNIX man-style reference page)
+    element refentry {
+      db.refentry.attlist,
+      db.indexterm*,
+      db.refentry.info,
+      db.refmeta?,
+      db.refnamediv+,
+      db.refsynopsisdiv?,
+      db.toplevel.refsection
+    }
+}
+div {
+  db.refmeta.role.attribute = attribute role { text }
+  db.refmeta.attlist =
+    db.refmeta.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.refmeta =
+    
+    ## Meta-information for a reference entry
+    element refmeta {
+      db.refmeta.attlist,
+      db.indexterm*,
+      db.refentrytitle,
+      db.manvolnum?,
+      db.refmiscinfo*,
+      db.indexterm*
+    }
+}
+db.refmiscinfo.class.enumeration =
+  
+  ## The name of the software product or component to which this topic applies
+  "source"
+  | 
+    ## The version of the software product or component to which this topic applies
+    "version"
+  | 
+    ## The section title of the reference page (e.g., User Commands)
+    "manual"
+  | 
+    ## The section title of the reference page (believed synonymous with "manual" but in wide use)
+    "sectdesc"
+  | 
+    ## The name of the software product or component to which this topic applies (e.g., SunOS x.y; believed synonymous with "source" but in wide use)
+    "software"
+db.refmiscinfo.class-enum.attribute =
+  
+  ## Identifies the kind of miscellaneous information
+  attribute class { db.refmiscinfo.class.enumeration }?
+db.refmiscinfo.class-other.attribute =
+  
+  ## Identifies the nature of non-standard miscellaneous information
+  attribute otherclass { text }
+db.refmiscinfo.class-other.attributes =
+  
+  ## Identifies the kind of miscellaneious information
+  attribute class {
+    
+    ## Indicates that the information is some 'other' kind.
+    "other"
+  }
+  & db.refmiscinfo.class-other.attribute
+db.refmiscinfo.class.attribute =
+  db.refmiscinfo.class-enum.attribute
+  | db.refmiscinfo.class-other.attributes
+div {
+  db.refmiscinfo.role.attribute = attribute role { text }
+  db.refmiscinfo.attlist =
+    db.refmiscinfo.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.refmiscinfo.class.attribute?
+  db.refmiscinfo =
+    
+    ## Meta-information for a reference entry other than the title and volume number
+    element refmiscinfo { db.refmiscinfo.attlist, db._text }
+}
+div {
+  db.refnamediv.role.attribute = attribute role { text }
+  db.refnamediv.attlist =
+    db.refnamediv.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.refnamediv =
+    
+    ## The name, purpose, and classification of a reference page
+    element refnamediv {
+      db.refnamediv.attlist,
+      db.refdescriptor?,
+      db.refname+,
+      db.refpurpose,
+      db.refclass*
+    }
+}
+div {
+  db.refdescriptor.role.attribute = attribute role { text }
+  db.refdescriptor.attlist =
+    db.refdescriptor.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.refdescriptor =
+    
+    ## A description of the topic of a reference page
+    element refdescriptor { db.refdescriptor.attlist, db.all.inlines* }
+}
+div {
+  db.refname.role.attribute = attribute role { text }
+  db.refname.attlist =
+    db.refname.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.refname =
+    
+    ## The name of (one of) the subject(s) of a reference page
+    element refname { db.refname.attlist, db.all.inlines* }
+}
+div {
+  db.refpurpose.role.attribute = attribute role { text }
+  db.refpurpose.attlist =
+    db.refpurpose.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.refpurpose =
+    
+    ## A short (one sentence) synopsis of the topic of a reference page
+    element refpurpose { db.refpurpose.attlist, db.all.inlines* }
+}
+div {
+  db.refclass.role.attribute = attribute role { text }
+  db.refclass.attlist =
+    db.refclass.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.refclass =
+    
+    ## The scope or other indication of applicability of a reference entry
+    element refclass { db.refclass.attlist, (text | db.application)* }
+}
+div {
+  db.refsynopsisdiv.role.attribute = attribute role { text }
+  db.refsynopsisdiv.attlist =
+    db.refsynopsisdiv.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.refsynopsisdiv.info = db._info
+  db.refsynopsisdiv =
+    
+    ## A syntactic synopsis of the subject of the reference page
+    element refsynopsisdiv {
+      db.refsynopsisdiv.attlist,
+      db.refsynopsisdiv.info,
+      ((db.all.blocks+, db.secondlevel.refsection?)
+       | db.secondlevel.refsection)
+    }
+}
+div {
+  db.refsection.status.attribute = db.status.attribute
+  db.refsection.role.attribute = attribute role { text }
+  db.refsection.attlist =
+    db.refsection.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.refsection.status.attribute?
+    & db.label.attribute?
+  db.refsection.info = db._info.title.req
+  db.refsection =
+    
+    ## A recursive section in a refentry
+    element refsection {
+      db.refsection.attlist,
+      db.refsection.info,
+      ((db.all.blocks+, db.refsection*) | db.refsection+)
+    }
+}
+db.refsect1.sections = db.refsect2+
+div {
+  db.refsect1.status.attribute = db.status.attribute
+  db.refsect1.role.attribute = attribute role { text }
+  db.refsect1.attlist =
+    db.refsect1.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.label.attribute?
+    & db.refsect1.status.attribute?
+  db.refsect1.info = db._info.title.req
+  db.refsect1 =
+    
+    ## A major subsection of a reference entry
+    element refsect1 {
+      db.refsect1.attlist,
+      db.refsect1.info,
+      ((db.all.blocks+, db.refsect1.sections?) | db.refsect1.sections)
+    }
+}
+db.refsect2.sections = db.refsect3+
+div {
+  db.refsect2.status.attribute = db.status.attribute
+  db.refsect2.role.attribute = attribute role { text }
+  db.refsect2.attlist =
+    db.refsect2.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.label.attribute?
+    & db.refsect2.status.attribute?
+  db.refsect2.info = db._info.title.req
+  db.refsect2 =
+    
+    ## A subsection of a refsect1
+    element refsect2 {
+      db.refsect2.attlist,
+      db.refsect2.info,
+      ((db.all.blocks+, db.refsect2.sections?) | db.refsect2.sections)
+    }
+}
+div {
+  db.refsect3.status.attribute = db.status.attribute
+  db.refsect3.role.attribute = attribute role { text }
+  db.refsect3.attlist =
+    db.refsect3.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.label.attribute?
+    & db.refsect3.status.attribute?
+  db.refsect3.info = db._info.title.req
+  db.refsect3 =
+    
+    ## A subsection of a refsect2
+    element refsect3 {
+      db.refsect3.attlist, db.refsect3.info, db.all.blocks+
+    }
+}
+db.glossary.inlines =
+  db.firstterm | db.glossterm | db._firstterm | db._glossterm
+db.baseform.attribute =
+  
+  ## Specifies the base form of the term, the one that appears in the glossary. This allows adjectival, plural, and other variations of the term to appear in the element. The element content is the default base form.
+  attribute baseform { text }?
+div {
+  db.glosslist.role.attribute = attribute role { text }
+  db.glosslist.attlist =
+    db.glosslist.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.glosslist.info = db._info.title.only
+  db.glosslist =
+    
+    ## A wrapper for a list of glossary entries
+    element glosslist {
+      db.glosslist.attlist,
+      db.glosslist.info?,
+      db.all.blocks*,
+      db.glossentry+
+    }
+}
+div {
+  db.glossentry.role.attribute = attribute role { text }
+  db.glossentry.sortas.attribute =
+    
+    ## Specifies the string by which the element's content is to be sorted; if unspecified, the content is used
+    attribute sortas { text }
+  db.glossentry.attlist =
+    db.glossentry.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.glossentry.sortas.attribute?
+  db.glossentry =
+    
+    ## An entry in a glossary or glosslist
+    element glossentry {
+      db.glossentry.attlist,
+      db.glossterm,
+      db.acronym?,
+      db.abbrev?,
+      db.indexterm*,
+      (db.glosssee | db.glossdef+)
+    }
+}
+div {
+  db.glossdef.role.attribute = attribute role { text }
+  db.glossdef.subject.attribute =
+    
+    ## Specifies a list of keywords for the definition
+    attribute subject { text }
+  db.glossdef.attlist =
+    db.glossdef.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.glossdef.subject.attribute?
+  db.glossdef =
+    
+    ## A definition in a glossentry
+    element glossdef {
+      db.glossdef.attlist, db.all.blocks+, db.glossseealso*
+    }
+}
+div {
+  db.glosssee.role.attribute = attribute role { text }
+  db.glosssee.otherterm.attribute =
+    
+    ## Identifies the other term
+    attribute otherterm { xsd:IDREF }
+  db.glosssee.attlist =
+    db.glosssee.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.glosssee.otherterm.attribute?
+  db.glosssee =
+    
+    ## A cross-reference from one glossentry
+    ##  to another
+    [
+      s:pattern [
+        name = "Glosssary 'see' type constraint"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:glosssee[@otherterm]"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test =
+              "local-name(//*[@xml:id=current()/@otherterm]) = 'glossentry' and namespace-uri(//*[@xml:id=current()/@otherterm]) = 'http://docbook.org/ns/docbook'"
+            "@otherterm on glosssee must point to a glossentry."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element glosssee { db.glosssee.attlist, db.all.inlines* }
+}
+div {
+  db.glossseealso.role.attribute = attribute role { text }
+  db.glossseealso.otherterm.attribute =
+    
+    ## Identifies the other term
+    attribute otherterm { xsd:IDREF }
+  db.glossseealso.attlist =
+    db.glossseealso.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.glossseealso.otherterm.attribute?
+  db.glossseealso =
+    
+    ## A cross-reference from one glossentry to another
+    [
+      s:pattern [
+        name = "Glossary 'seealso' type constraint"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:glossseealso[@otherterm]"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test =
+              "local-name(//*[@xml:id=current()/@otherterm]) = 'glossentry' and namespace-uri(//*[@xml:id=current()/@otherterm]) = 'http://docbook.org/ns/docbook'"
+            "@otherterm on glossseealso must point to a glossentry."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element glossseealso { db.glossseealso.attlist, db.all.inlines* }
+}
+div {
+  db.firstterm.role.attribute = attribute role { text }
+  db.firstterm.attlist =
+    db.firstterm.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.baseform.attribute
+  db.firstterm =
+    
+    ## The first occurrence of a term
+    [
+      s:pattern [
+        name = "Glossary 'firstterm' type constraint"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:firstterm[@linkend]"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test =
+              "local-name(//*[@xml:id=current()/@linkend]) = 'glossentry' and namespace-uri(//*[@xml:id=current()/@linkend]) = 'http://docbook.org/ns/docbook'"
+            "@linkend on firstterm must point to a glossentry."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element firstterm { db.firstterm.attlist, db.all.inlines* }
+}
+div {
+  db._firstterm.role.attribute = attribute role { text }
+  db._firstterm.attlist =
+    db._firstterm.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.baseform.attribute
+  db._firstterm =
+    
+    ## The first occurrence of a term, with limited content
+    [
+      s:pattern [
+        name = "Glossary 'firstterm' type constraint"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:firstterm[@linkend]"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test =
+              "local-name(//*[@xml:id=current()/@linkend]) = 'glossentry' and namespace-uri(//*[@xml:id=current()/@linkend]) = 'http://docbook.org/ns/docbook'"
+            "@linkend on firstterm must point to a glossentry."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element firstterm { db._firstterm.attlist, db._text }
+}
+div {
+  db.glossterm.role.attribute = attribute role { text }
+  db.glossterm.attlist =
+    db.glossterm.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.baseform.attribute
+  db.glossterm =
+    
+    ## A glossary term
+    [
+      s:pattern [
+        name = "Glossary 'glossterm' type constraint"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:glossterm[@linkend]"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test =
+              "local-name(//*[@xml:id=current()/@linkend]) = 'glossentry' and namespace-uri(//*[@xml:id=current()/@linkend]) = 'http://docbook.org/ns/docbook'"
+            "@linkend on glossterm must point to a glossentry."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element glossterm { db.glossterm.attlist, db.all.inlines* }
+}
+div {
+  db._glossterm.role.attribute = attribute role { text }
+  db._glossterm.attlist =
+    db._glossterm.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.baseform.attribute
+  db._glossterm =
+    
+    ## A glossary term
+    [
+      s:pattern [
+        name = "Glossary 'glossterm' type constraint"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:glossterm[@linkend]"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test =
+              "local-name(//*[@xml:id=current()/@linkend]) = 'glossentry' and namespace-uri(//*[@xml:id=current()/@linkend]) = 'http://docbook.org/ns/docbook'"
+            "@linkend on glossterm must point to a glossentry."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element glossterm { db._glossterm.attlist, db._text }
+}
+div {
+  db.glossary.status.attribute = db.status.attribute
+  db.glossary.role.attribute = attribute role { text }
+  db.glossary.attlist =
+    db.glossary.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.label.attribute?
+    & db.glossary.status.attribute?
+  db.glossary.info = db._info
+  db.glossary =
+    
+    ## A glossary
+    element glossary {
+      db.glossary.attlist,
+      db.glossary.info,
+      db.all.blocks*,
+      (db.glossdiv* | db.glossentry*),
+      db.bibliography?
+    }
+}
+div {
+  db.glossdiv.status.attribute = db.status.attribute
+  db.glossdiv.role.attribute = attribute role { text }
+  db.glossdiv.attlist =
+    db.glossdiv.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.label.attribute?
+    & db.glossdiv.status.attribute?
+  db.glossdiv.info = db._info.title.req
+  db.glossdiv =
+    
+    ## A division in a glossary
+    element glossdiv {
+      db.glossdiv.attlist,
+      db.glossdiv.info,
+      db.all.blocks*,
+      db.glossentry+
+    }
+}
+div {
+  db.termdef.role.attribute = attribute role { text }
+  db.termdef.attlist =
+    db.termdef.role.attribute?
+    & db.glossentry.sortas.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.baseform.attribute
+  db.termdef =
+    
+    ## An inline definition of a term
+    [
+      s:pattern [
+        name = "Glossary term definition constraint"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:termdef"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "count(db:firstterm) = 1"
+            "A termdef must contain exactly one firstterm"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element termdef { db.termdef.attlist, db.all.inlines* }
+}
+db.relation.attribute =
+  
+  ## Identifies the relationship between the bibliographic elemnts
+  attribute relation { text }
+div {
+  db.biblioentry.role.attribute = attribute role { text }
+  db.biblioentry.attlist =
+    db.biblioentry.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.biblioentry =
+    
+    ## A raw entry in a bibliography
+    element biblioentry {
+      db.biblioentry.attlist, db.bibliographic.elements+
+    }
+}
+div {
+  db.bibliomixed.role.attribute = attribute role { text }
+  db.bibliomixed.attlist =
+    db.bibliomixed.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.bibliomixed =
+    
+    ## A cooked entry in a bibliography
+    element bibliomixed {
+      db.bibliomixed.attlist,
+      ((db._text
+        | db.honorific
+        | db.firstname
+        | db.surname
+        | db.lineage
+        | db.othername
+        | db.bibliographic.elements)*
+       | (db._text
+          | db.honorific
+          | db.givenname
+          | db.surname
+          | db.lineage
+          | db.othername
+          | db.bibliographic.elements)*)
+    }
+}
+div {
+  db.biblioset.relation.attribute = db.relation.attribute
+  db.biblioset.role.attribute = attribute role { text }
+  db.biblioset.attlist =
+    db.biblioset.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.biblioset.relation.attribute?
+  db.biblioset =
+    
+    ## A raw container for related bibliographic information
+    element biblioset {
+      db.biblioset.attlist, db.bibliographic.elements+
+    }
+}
+div {
+  db.bibliomset.relation.attribute = db.relation.attribute
+  db.bibliomset.role.attribute = attribute role { text }
+  db.bibliomset.attlist =
+    db.bibliomset.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.bibliomset.relation.attribute?
+  db.bibliomset =
+    
+    ## A cooked container for related bibliographic information
+    element bibliomset {
+      db.bibliomset.attlist,
+      ((db._text
+        | db.honorific
+        | db.firstname
+        | db.surname
+        | db.lineage
+        | db.othername
+        | db.bibliographic.elements)*
+       | (db._text
+          | db.honorific
+          | db.givenname
+          | db.surname
+          | db.lineage
+          | db.othername
+          | db.bibliographic.elements)*)
+    }
+}
+div {
+  db.bibliomisc.role.attribute = attribute role { text }
+  db.bibliomisc.attlist =
+    db.bibliomisc.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.bibliomisc =
+    
+    ## Untyped bibliographic information
+    element bibliomisc { db.bibliomisc.attlist, db._text }
+}
+div {
+  db.bibliography.status.attrib = db.status.attribute
+  db.bibliography.role.attribute = attribute role { text }
+  db.bibliography.attlist =
+    db.bibliography.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.label.attribute?
+    & db.bibliography.status.attrib?
+  db.bibliography.info = db._info
+  db.bibliography =
+    
+    ## A bibliography
+    element bibliography {
+      db.bibliography.attlist,
+      db.bibliography.info,
+      db.all.blocks*,
+      (db.bibliodiv+ | (db.biblioentry | db.bibliomixed)+)
+    }
+}
+div {
+  db.bibliodiv.status.attrib = db.status.attribute
+  db.bibliodiv.role.attribute = attribute role { text }
+  db.bibliodiv.attlist =
+    db.bibliodiv.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.label.attribute?
+    & db.bibliodiv.status.attrib?
+  db.bibliodiv.info = db._info.title.req
+  db.bibliodiv =
+    
+    ## A section of a bibliography
+    element bibliodiv {
+      db.bibliodiv.attlist,
+      db.bibliodiv.info,
+      db.all.blocks*,
+      (db.biblioentry | db.bibliomixed)+
+    }
+}
+div {
+  db.bibliolist.role.attribute = attribute role { text }
+  db.bibliolist.attlist =
+    db.bibliolist.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.bibliolist.info = db._info.title.only
+  db.bibliolist =
+    
+    ## A wrapper for a list of bibliography entries
+    element bibliolist {
+      db.bibliolist.attlist,
+      db.bibliolist.info?,
+      db.all.blocks*,
+      (db.biblioentry | db.bibliomixed)+
+    }
+}
+div {
+  db.biblioref.role.attribute = attribute role { text }
+  db.biblioref.xrefstyle.attribute = db.xrefstyle.attribute
+  db.biblioref.endterm.attribute = db.endterm.attribute
+  db.biblioref.units.attribute =
+    
+    ## The units (for example, pages) used to identify the beginning and ending of a reference.
+    attribute units { xsd:token }
+  db.biblioref.begin.attribute =
+    
+    ## Identifies the beginning of a reference; the location within the work that is being referenced.
+    attribute begin { xsd:token }
+  db.biblioref.end.attribute =
+    
+    ## Identifies the end of a reference.
+    attribute end { xsd:token }
+  db.biblioref.attlist =
+    db.biblioref.role.attribute?
+    & db.common.attributes
+    & db.common.req.linking.attributes
+    & db.biblioref.xrefstyle.attribute?
+    & db.biblioref.endterm.attribute?
+    & db.biblioref.units.attribute?
+    & db.biblioref.begin.attribute?
+    & db.biblioref.end.attribute?
+  db.biblioref =
+    
+    ## A cross-reference to a bibliographic entry
+    element biblioref { db.biblioref.attlist, empty }
+}
+db.significance.enumeration =
+  
+  ## Normal
+  "normal"
+  | 
+    ## Preferred
+    "preferred"
+db.significance.attribute =
+  
+  ## Specifies the significance of the term
+  attribute significance { db.significance.enumeration }
+db.zone.attribute =
+  
+  ## Specifies the IDs of the elements to which this term applies
+  attribute zone { xsd:IDREFS }
+db.indexterm.pagenum.attribute =
+  
+  ## Indicates the page on which this index term occurs in some version of the printed document
+  attribute pagenum { text }
+db.scope.enumeration =
+  
+  ## All indexes
+  "all"
+  | 
+    ## The global index (as for a combined index of a set of books)
+    "global"
+  | 
+    ## The local index (the index for this document only)
+    "local"
+db.scope.attribute =
+  
+  ## Specifies the scope of the index term
+  attribute scope { db.scope.enumeration }
+db.sortas.attribute =
+  
+  ## Specifies the string by which the term is to be sorted; if unspecified, the term content is used
+  attribute sortas { text }
+db.index.type.attribute =
+  
+  ## Specifies the target index for this term
+  attribute type { text }
+div {
+  db.itermset.role.attribute = attribute role { text }
+  db.itermset.attlist =
+    db.itermset.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.itermset =
+    
+    ## A set of index terms in the meta-information of a document
+    element itermset { db.itermset.attlist, db.indexterm.singular+ }
+}
+db.indexterm.contentmodel =
+  db.primary?,
+  ((db.secondary,
+    ((db.tertiary, (db.see | db.seealso+)?)
+     | db.see
+     | db.seealso+)?)
+   | db.see
+   | db.seealso+)?
+div {
+  db.indexterm.singular.role.attribute = attribute role { text }
+  db.indexterm.singular.class.attribute =
+    
+    ## Identifies the class of index term
+    attribute class {
+      
+      ## A singular index term
+      "singular"
+    }
+  db.indexterm.singular.attlist =
+    db.indexterm.singular.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.significance.attribute?
+    & db.zone.attribute?
+    & db.indexterm.pagenum.attribute?
+    & db.scope.attribute?
+    & db.index.type.attribute?
+    & db.indexterm.singular.class.attribute?
+  db.indexterm.singular =
+    
+    ## A wrapper for an indexed term
+    element indexterm {
+      db.indexterm.singular.attlist, db.indexterm.contentmodel
+    }
+}
+div {
+  db.indexterm.startofrange.role.attribute = attribute role { text }
+  db.indexterm.startofrange.class.attribute =
+    
+    ## Identifies the class of index term
+    attribute class {
+      
+      ## The start of a range
+      "startofrange"
+    }
+  db.indexterm.startofrange.attlist =
+    db.indexterm.startofrange.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.significance.attribute?
+    & db.zone.attribute?
+    & db.indexterm.pagenum.attribute?
+    & db.scope.attribute?
+    & db.index.type.attribute?
+    & db.indexterm.startofrange.class.attribute
+  db.indexterm.startofrange =
+    
+    ## A wrapper for an indexed term that covers a range
+    element indexterm {
+      db.indexterm.startofrange.attlist, db.indexterm.contentmodel
+    }
+}
+div {
+  db.indexterm.endofrange.role.attribute = attribute role { text }
+  db.indexterm.endofrange.class.attribute =
+    
+    ## Identifies the class of index term
+    attribute class {
+      
+      ## The end of a range
+      "endofrange"
+    }
+  db.indexterm.endofrange.startref.attribute =
+    
+    ## Points to the start of the range
+    attribute startref { xsd:IDREF }
+  db.indexterm.endofrange.attlist =
+    db.indexterm.endofrange.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.indexterm.endofrange.class.attribute
+    & db.indexterm.endofrange.startref.attribute
+  db.indexterm.endofrange =
+    
+    ## Identifies the end of a range associated with an indexed term
+    element indexterm { db.indexterm.endofrange.attlist, empty }
+}
+div {
+  db.indexterm =
+    db.indexterm.singular
+    | db.indexterm.startofrange
+    | db.indexterm.endofrange
+}
+div {
+  db.primary.role.attribute = attribute role { text }
+  db.primary.attlist =
+    db.primary.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.sortas.attribute?
+  db.primary =
+    
+    ## The primary word or phrase under which an index term should be sorted
+    element primary { db.primary.attlist, db.all.inlines* }
+}
+div {
+  db.secondary.role.attribute = attribute role { text }
+  db.secondary.attlist =
+    db.secondary.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.sortas.attribute?
+  db.secondary =
+    
+    ## A secondary word or phrase in an index term
+    element secondary { db.secondary.attlist, db.all.inlines* }
+}
+div {
+  db.tertiary.role.attribute = attribute role { text }
+  db.tertiary.attlist =
+    db.tertiary.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.sortas.attribute?
+  db.tertiary =
+    
+    ## A tertiary word or phrase in an index term
+    element tertiary { db.tertiary.attlist, db.all.inlines* }
+}
+div {
+  db.see.role.attribute = attribute role { text }
+  db.see.attlist =
+    db.see.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.see =
+    
+    ## Part of an index term directing the reader instead to another entry in the index
+    element see { db.see.attlist, db.all.inlines* }
+}
+div {
+  db.seealso.role.attribute = attribute role { text }
+  db.seealso.attlist =
+    db.seealso.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.seealso =
+    
+    ## Part of an index term directing the reader also to another entry in the index
+    element seealso { db.seealso.attlist, db.all.inlines* }
+}
+div {
+  db.index.status.attribute = db.status.attribute
+  db.index.role.attribute = attribute role { text }
+  db.index.attlist =
+    db.index.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.label.attribute?
+    & db.index.status.attribute?
+    & db.index.type.attribute?
+  db.index.info = db._info
+  # Yes, db.indexdiv* and db.indexentry*; that way an <index/> is valid.
+  # Authors can use an empty index to indicate where a generated index should
+  # appear.
+  db.index =
+    
+    ## An index to a book or part of a book
+    element index {
+      db.index.attlist,
+      db.index.info,
+      db.all.blocks*,
+      (db.indexdiv* | db.indexentry* | db.segmentedlist)
+    }
+}
+div {
+  db.setindex.status.attribute = db.status.attribute
+  db.setindex.role.attribute = attribute role { text }
+  db.setindex.attlist =
+    db.setindex.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.label.attribute?
+    & db.setindex.status.attribute?
+    & db.index.type.attribute?
+  db.setindex.info = db._info
+  db.setindex =
+    
+    ## An index to a set of books
+    element setindex {
+      db.setindex.attlist,
+      db.setindex.info,
+      db.all.blocks*,
+      (db.indexdiv* | db.indexentry*)
+    }
+}
+div {
+  db.indexdiv.status.attribute = db.status.attribute
+  db.indexdiv.role.attribute = attribute role { text }
+  db.indexdiv.attlist =
+    db.indexdiv.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.label.attribute?
+    & db.indexdiv.status.attribute?
+  db.indexdiv.info = db._info.title.req
+  db.indexdiv =
+    
+    ## A division in an index
+    element indexdiv {
+      db.indexdiv.attlist,
+      db.indexdiv.info,
+      db.all.blocks*,
+      (db.indexentry+ | db.segmentedlist)
+    }
+}
+div {
+  db.indexentry.role.attribute = attribute role { text }
+  db.indexentry.attlist =
+    db.indexentry.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.indexentry =
+    
+    ## An entry in an index
+    element indexentry {
+      db.indexentry.attlist,
+      db.primaryie,
+      (db.seeie | db.seealsoie)*,
+      (db.secondaryie, (db.seeie | db.seealsoie | db.tertiaryie)*)*
+    }
+}
+div {
+  db.primaryie.role.attribute = attribute role { text }
+  db.primaryie.attlist =
+    db.primaryie.role.attribute?
+    & db.common.attributes
+    & db.linkends.attribute?
+  db.primaryie =
+    
+    ## A primary term in an index entry, not in the text
+    element primaryie { db.primaryie.attlist, db.all.inlines* }
+}
+div {
+  db.secondaryie.role.attribute = attribute role { text }
+  db.secondaryie.attlist =
+    db.secondaryie.role.attribute?
+    & db.common.attributes
+    & db.linkends.attribute?
+  db.secondaryie =
+    
+    ## A secondary term in an index entry, rather than in the text
+    element secondaryie { db.secondaryie.attlist, db.all.inlines* }
+}
+div {
+  db.tertiaryie.role.attribute = attribute role { text }
+  db.tertiaryie.attlist =
+    db.tertiaryie.role.attribute?
+    & db.common.attributes
+    & db.linkends.attribute?
+  db.tertiaryie =
+    
+    ## A tertiary term in an index entry, rather than in the text
+    element tertiaryie { db.tertiaryie.attlist, db.all.inlines* }
+}
+div {
+  db.seeie.role.attribute = attribute role { text }
+  db.seeie.attlist =
+    db.seeie.role.attribute?
+    & db.common.attributes
+    & db.linkend.attribute?
+  db.seeie =
+    
+    ## A See
+    ## entry in an index, rather than in the text
+    element seeie { db.seeie.attlist, db.all.inlines* }
+}
+div {
+  db.seealsoie.role.attribute = attribute role { text }
+  db.seealsoie.attlist =
+    db.seealsoie.role.attribute?
+    & db.common.attributes
+    & db.linkends.attribute?
+  db.seealsoie =
+    
+    ## A See also
+    ##  entry in an index, rather than in the text
+    element seealsoie { db.seealsoie.attlist, db.all.inlines* }
+}
+db.toc.pagenum.attribute =
+  
+  ## Indicates the page on which this element occurs in some version of the printed document
+  attribute pagenum { text }
+div {
+  db.toc.role.attribute = attribute role { text }
+  db.toc.attlist =
+    db.toc.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.toc.info = db._info.title.only
+  db.toc =
+    
+    ## A table of contents
+    element toc {
+      db.toc.attlist,
+      db.toc.info,
+      db.all.blocks*,
+      (db.tocdiv | db.tocentry)*
+    }
+}
+div {
+  db.tocdiv.role.attribute = attribute role { text }
+  db.tocdiv.pagenum.attribute = db.toc.pagenum.attribute
+  db.tocdiv.attlist =
+    db.tocdiv.role.attribute?
+    & db.common.attributes
+    & db.tocdiv.pagenum.attribute?
+    & db.linkend.attribute?
+  db.tocdiv.info = db._info
+  db.tocdiv =
+    
+    ## A division in a table of contents
+    element tocdiv {
+      db.tocdiv.attlist,
+      db.tocdiv.info,
+      db.all.blocks*,
+      (db.tocdiv | db.tocentry)+
+    }
+}
+div {
+  db.tocentry.role.attribute = attribute role { text }
+  db.tocentry.pagenum.attribute = db.toc.pagenum.attribute
+  db.tocentry.attlist =
+    db.tocentry.role.attribute?
+    & db.common.attributes
+    & db.tocentry.pagenum.attribute?
+    & db.linkend.attribute?
+  db.tocentry =
+    
+    ## A component title in a table of contents
+    element tocentry { db.tocentry.attlist, db.all.inlines* }
+}
+db.task.info = db._info.title.req
+div {
+  db.task.role.attribute = attribute role { text }
+  db.task.attlist =
+    db.task.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.task =
+    
+    ## A task to be completed
+    element task {
+      db.task.attlist,
+      db.task.info,
+      db.tasksummary?,
+      db.taskprerequisites?,
+      db.procedure+,
+      db.example*,
+      db.taskrelated?
+    }
+}
+div {
+  db.tasksummary.role.attribute = attribute role { text }
+  db.tasksummary.attlist =
+    db.tasksummary.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.tasksummary.info = db._info.title.only
+  db.tasksummary =
+    
+    ## A summary of a task
+    element tasksummary {
+      db.tasksummary.attlist, db.tasksummary.info, db.all.blocks+
+    }
+}
+div {
+  db.taskprerequisites.role.attribute = attribute role { text }
+  db.taskprerequisites.attlist =
+    db.taskprerequisites.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.taskprerequisites.info = db._info.title.only
+  db.taskprerequisites =
+    
+    ## The prerequisites for a task
+    element taskprerequisites {
+      db.taskprerequisites.attlist,
+      db.taskprerequisites.info,
+      db.all.blocks+
+    }
+}
+div {
+  db.taskrelated.role.attribute = attribute role { text }
+  db.taskrelated.attlist =
+    db.taskrelated.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.taskrelated.info = db._info.title.only
+  db.taskrelated =
+    
+    ## Information related to a task
+    element taskrelated {
+      db.taskrelated.attlist, db.taskrelated.info, db.all.blocks+
+    }
+}
+db.area.units.enumeration =
+  
+  ## Coordinates expressed as a pair of CALS graphic coordinates.
+  "calspair"
+  | 
+    ## Coordinates expressed as a line and column.
+    "linecolumn"
+  | 
+    ## Coordinates expressed as a pair of lines and columns.
+    "linecolumnpair"
+  | 
+    ## Coordinates expressed as a line range.
+    "linerange"
+db.area.units-enum.attribute =
+  
+  ## Identifies the units used in the coords attribute. The default units vary according to the type of callout specified: calspair
+  ##  for graphics and linecolumn
+  ##  for line-oriented elements.
+  attribute units { db.area.units.enumeration }?
+db.area.units-other.attributes =
+  
+  ## Indicates that non-standard units are used for this area
+  ## . In this case otherunits
+  ##  must be specified.
+  attribute units {
+    
+    ## Coordinates expressed in some non-standard units.
+    "other"
+  }?,
+  
+  ## Identifies the units used in the coords
+  ##  attribute when the units
+  ##  attribute is other
+  ## . This attribute is forbidden otherwise.
+  attribute otherunits { xsd:NMTOKEN }
+db.area.units.attribute =
+  db.area.units-enum.attribute | db.area.units-other.attributes
+div {
+  db.calloutlist.role.attribute = attribute role { text }
+  db.calloutlist.attlist =
+    db.calloutlist.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.calloutlist.info = db._info.title.only
+  db.calloutlist =
+    
+    ## A list of callout
+    ## s
+    element calloutlist {
+      db.calloutlist.attlist,
+      db.calloutlist.info,
+      db.all.blocks*,
+      db.callout+
+    }
+}
+div {
+  db.callout.role.attribute = attribute role { text }
+  db.callout.arearefs.attribute =
+    
+    ## Identifies the areas described by this callout.
+    attribute arearefs { xsd:IDREFS }
+  db.callout.attlist =
+    db.callout.role.attribute?
+    & db.common.attributes
+    & db.callout.arearefs.attribute
+  db.callout =
+    
+    ## A called out
+    ##  description of a marked area
+    element callout { db.callout.attlist, db.all.blocks+ }
+}
+div {
+  db.programlistingco.role.attribute = attribute role { text }
+  db.programlistingco.attlist =
+    db.programlistingco.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.programlistingco.info = db._info.title.forbidden
+  db.programlistingco =
+    
+    ## A program listing with associated areas used in callouts
+    element programlistingco {
+      db.programlistingco.attlist,
+      db.programlistingco.info,
+      db.areaspec,
+      db.programlisting,
+      db.calloutlist*
+    }
+}
+div {
+  db.areaspec.role.attribute = attribute role { text }
+  db.areaspec.attlist =
+    db.areaspec.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.area.units.attribute
+  db.areaspec =
+    
+    ## A collection of regions in a graphic or code example
+    element areaspec { db.areaspec.attlist, (db.area | db.areaset)+ }
+}
+div {
+  db.area.role.attribute = attribute role { text }
+  db.area.linkends.attribute =
+    
+    ## Point to the callout
+    ## s which refer to this area. (This provides bidirectional linking which may be useful in online presentation.)
+    attribute linkends { xsd:IDREFS }
+  db.area.label.attribute =
+    
+    ## Specifies an identifying number or string that may be used in presentation. The area label might be drawn on top of the figure, for example, at the position indicated by the coords attribute.
+    attribute label { text }
+  db.area.coords.attribute =
+    
+    ## Provides the coordinates of the area. The coordinates must be interpreted using the units
+    ##  specified.
+    attribute coords { text }
+  db.area.attlist =
+    db.area.role.attribute?
+    & db.common.idreq.attributes
+    & db.area.units.attribute
+    & (db.area.linkends.attribute | db.xlink.simple.link.attributes)?
+    & db.area.label.attribute?
+    & db.area.coords.attribute
+  db.area =
+    
+    ## A region defined for a callout in a graphic or code example
+    element area { db.area.attlist, db.alt? }
+}
+div {
+  # The only difference is that xml:id is optional
+  db.area.inareaset.attlist =
+    db.area.role.attribute?
+    & db.common.attributes
+    & db.area.units.attribute
+    & (db.area.linkends.attribute | db.xlink.simple.link.attributes)?
+    & db.area.label.attribute?
+    & db.area.coords.attribute
+  db.area.inareaset =
+    
+    ## A region defined for a callout in a graphic or code example
+    element area { db.area.inareaset.attlist, db.alt? }
+}
+div {
+  db.areaset.role.attribute = attribute role { text }
+  db.areaset.linkends.attribute = db.linkends.attribute
+  db.areaset.label.attribute = db.label.attribute
+  db.areaset.attlist =
+    db.areaset.role.attribute?
+    & db.common.idreq.attributes
+    & db.area.units.attribute
+    & (db.areaset.linkends.attribute | db.xlink.simple.link.attributes)?
+    & db.areaset.label.attribute?
+  db.areaset =
+    
+    ## A set of related areas in a graphic or code example
+    element areaset { db.areaset.attlist, db.area.inareaset+ }
+}
+div {
+  db.screenco.role.attribute = attribute role { text }
+  db.screenco.attlist =
+    db.screenco.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.screenco.info = db._info.title.forbidden
+  db.screenco =
+    
+    ## A screen with associated areas used in callouts
+    element screenco {
+      db.screenco.attlist,
+      db.screenco.info,
+      db.areaspec,
+      db.screen,
+      db.calloutlist*
+    }
+}
+div {
+  db.imageobjectco.role.attribute = attribute role { text }
+  db.imageobjectco.attlist =
+    db.imageobjectco.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.imageobjectco.info = db._info.title.forbidden
+  db.imageobjectco =
+    
+    ## A wrapper for an image object with callouts
+    element imageobjectco {
+      db.imageobjectco.attlist,
+      db.imageobjectco.info,
+      db.areaspec,
+      db.imageobject+,
+      db.calloutlist*
+    }
+}
+div {
+  db.co.role.attribute = attribute role { text }
+  db.co.linkends.attribute = db.linkends.attribute
+  db.co.label.attribute = db.label.attribute
+  db.co.attlist =
+    db.co.role.attribute?
+    & db.common.idreq.attributes
+    & db.co.linkends.attribute?
+    & db.co.label.attribute?
+  db.co =
+    
+    ## The location of a callout embedded in text
+    element co { db.co.attlist, empty }
+}
+div {
+  db.coref.role.attribute = attribute role { text }
+  db.coref.label.attribute = db.label.attribute
+  db.coref.attlist =
+    db.coref.role.attribute?
+    & db.common.attributes
+    & db.linkend.attribute
+    & db.coref.label.attribute?
+  db.coref =
+    
+    ## A cross reference to a co
+    element coref { db.coref.attlist, empty }
+}
+div {
+  db.productionset.role.attribute = attribute role { text }
+  db.productionset.attlist =
+    db.productionset.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.productionset.info = db._info.title.only
+  db.productionset =
+    
+    ## A set of EBNF productions
+    element productionset {
+      db.productionset.attlist,
+      db.productionset.info,
+      (db.production | db.productionrecap)+
+    }
+}
+div {
+  db.production.role.attribute = attribute role { text }
+  db.production.attlist =
+    db.production.role.attribute?
+    & db.common.idreq.attributes
+    & db.common.linking.attributes
+  db.production =
+    
+    ## A production in a set of EBNF productions
+    element production {
+      db.production.attlist, db.lhs, db.rhs+, db.constraint*
+    }
+}
+div {
+  db.lhs.role.attribute = attribute role { text }
+  db.lhs.attlist =
+    db.lhs.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.lhs =
+    
+    ## The left-hand side of an EBNF production
+    element lhs { db.lhs.attlist, text }
+}
+div {
+  db.rhs.role.attribute = attribute role { text }
+  db.rhs.attlist =
+    db.rhs.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.rhs =
+    
+    ## The right-hand side of an EBNF production
+    element rhs {
+      db.rhs.attlist,
+      (text | db.nonterminal | db.lineannotation | db.sbr)*
+    }
+}
+div {
+  db.nonterminal.role.attribute = attribute role { text }
+  db.nonterminal.def.attribute =
+    
+    ## Specifies a URI that points to a production
+    ## where the nonterminal
+    ##  is defined
+    attribute def { xsd:anyURI }
+  db.nonterminal.attlist =
+    db.nonterminal.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.nonterminal.def.attribute
+  db.nonterminal =
+    
+    ## A non-terminal in an EBNF production
+    element nonterminal { db.nonterminal.attlist, text }
+}
+div {
+  db.constraint.role.attribute = attribute role { text }
+  db.constraint.attlist =
+    db.constraint.role.attribute?
+    & db.common.attributes
+    & db.common.req.linking.attributes
+  db.constraint =
+    
+    ## A constraint in an EBNF production
+    element constraint { db.constraint.attlist, empty }
+}
+div {
+  db.productionrecap.role.attribute = attribute role { text }
+  db.productionrecap.attlist =
+    db.productionrecap.role.attribute?
+    & db.common.attributes
+    & db.common.req.linking.attributes
+  db.productionrecap =
+    
+    ## A cross-reference to an EBNF production
+    element productionrecap { db.productionrecap.attlist, empty }
+}
+div {
+  db.constraintdef.role.attribute = attribute role { text }
+  db.constraintdef.attlist =
+    db.constraintdef.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.constraintdef.info = db._info.title.only
+  db.constraintdef =
+    
+    ## The definition of a constraint in an EBNF production
+    element constraintdef {
+      db.constraintdef.attlist, db.constraintdef.info, db.all.blocks+
+    }
+}
+db.char.attribute =
+  
+  ## Specifies the alignment character when align
+  ##  is set to char
+  ## .
+  attribute char { text }
+db.charoff.attribute =
+  
+  ## Specifies the percentage of the column's total width that should appear to the left of the first occurance of the character identified in char
+  ##  when align
+  ##  is set to char
+  ## .
+  attribute charoff {
+    xsd:decimal { minExclusive = "0" maxExclusive = "100" }
+  }
+db.frame.attribute =
+  
+  ## Specifies how the table is to be framed. Note that there is no way to obtain a border on only the starting edge (left, in left-to-right writing systems) of the table.
+  attribute frame {
+    
+    ## Frame all four sides of the table. In some environments with limited control over table border formatting, such as HTML, this may imply additional borders.
+    "all"
+    | 
+      ## Frame only the bottom of the table.
+      "bottom"
+    | 
+      ## Place no border on the table. In some environments with limited control over table border formatting, such as HTML, this may disable other borders as well.
+      "none"
+    | 
+      ## Frame the left and right sides of the table.
+      "sides"
+    | 
+      ## Frame the top of the table.
+      "top"
+    | 
+      ## Frame the top and bottom of the table.
+      "topbot"
+  }
+db.colsep.attribute =
+  
+  ## Specifies the presence or absence of the column separator
+  attribute colsep {
+    
+    ## No column separator rule.
+    "0"
+    | 
+      ## Provide a column separator rule on the right
+      "1"
+  }
+db.rowsep.attribute =
+  
+  ## Specifies the presence or absence of the row separator
+  attribute rowsep {
+    
+    ## No row separator rule.
+    "0"
+    | 
+      ## Provide a row separator rule below
+      "1"
+  }
+db.orient.attribute =
+  
+  ## Specifies the orientation of the table
+  attribute orient {
+    
+    ## 90 degrees counter-clockwise from the rest of the text flow.
+    "land"
+    | 
+      ## The same orientation as the rest of the text flow.
+      "port"
+  }
+db.tabstyle.attribute =
+  
+  ## Specifies the table style
+  attribute tabstyle { text }
+db.rowheader.attribute =
+  
+  ## Indicates whether or not the entries in the first column should be considered row headers
+  attribute rowheader {
+    
+    ## Indicates that entries in the first column of the table are functionally row headers (analogous to the way that a thead provides column headers).
+    "firstcol"
+    | 
+      ## Indicates that entries in the first column have no special significance with respect to column headers.
+      "norowheader"
+  }
+db.align.attribute =
+  
+  ## Specifies the horizontal alignment of text in an entry.
+  attribute align {
+    
+    ## Centered.
+    "center"
+    | 
+      ## Aligned on a particular character.
+      "char"
+    | 
+      ## Left and right justified.
+      "justify"
+    | 
+      ## Left justified.
+      "left"
+    | 
+      ## Right justified.
+      "right"
+  }
+db.valign.attribute =
+  
+  ## Specifies the vertical alignment of text in an entry.
+  attribute valign {
+    
+    ## Aligned on the bottom of the entry.
+    "bottom"
+    | 
+      ## Aligned in the middle.
+      "middle"
+    | 
+      ## Aligned at the top of the entry.
+      "top"
+  }
+db.specify-col-by-colname.attributes =
+  
+  ## Specifies a column specification by name.
+  attribute colname { text }
+db.specify-col-by-namest.attributes =
+  
+  ## Specifies a starting column by name.
+  attribute namest { text }
+db.specify-span-by-spanspec.attributes =
+  
+  ## Specifies a span by name.
+  attribute spanname { text }
+db.specify-span-directly.attributes =
+  
+  ## Specifies a starting column by name.
+  attribute namest { text }
+  & 
+    ## Specifies an ending column by name.
+    attribute nameend { text }
+db.column-spec.attributes =
+  db.specify-col-by-colname.attributes
+  | db.specify-col-by-namest.attributes
+  | db.specify-span-by-spanspec.attributes
+  | db.specify-span-directly.attributes
+db.colname.attribute =
+  
+  ## Provides a name for a column specification.
+  attribute colname { text }
+db.spanname.attribute =
+  
+  ## Provides a name for a span specification.
+  attribute spanname { text }
+div {
+  db.tgroup.role.attribute = attribute role { text }
+  db.tgroup.tgroupstyle.attribute =
+    
+    ## Additional style information for downstream processing; typically the name of a style.
+    attribute tgroupstyle { text }
+  db.tgroup.cols.attribute =
+    
+    ## The number of columns in the table. Must be an integer greater than zero.
+    attribute cols { xsd:positiveInteger }
+  db.tgroup.attlist =
+    db.tgroup.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.char.attribute?
+    & db.charoff.attribute?
+    & db.tgroup.tgroupstyle.attribute?
+    & db.tgroup.cols.attribute
+    & db.colsep.attribute?
+    & db.rowsep.attribute?
+    & db.align.attribute?
+  db.tgroup =
+    
+    ## A wrapper for the main content of a table, or part of a table
+    element tgroup {
+      db.tgroup.attlist,
+      db.colspec*,
+      db.spanspec*,
+      db.cals.thead?,
+      db.cals.tfoot?,
+      db.cals.tbody
+    }
+}
+div {
+  db.colspec.role.attribute = attribute role { text }
+  db.colspec.colnum.attribute =
+    
+    ## The number of the column to which this specification applies. Must be greater than any preceding column number. Defaults to one more than the number of the preceding column, if there is one, or one.
+    attribute colnum { xsd:positiveInteger }
+  db.colspec.colwidth.attribute =
+    
+    ## Specifies the width of the column.
+    attribute colwidth { text }
+  db.colspec.attlist =
+    db.colspec.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.colspec.colnum.attribute?
+    & db.char.attribute?
+    & db.colsep.attribute?
+    & db.colspec.colwidth.attribute?
+    & db.charoff.attribute?
+    & db.colname.attribute?
+    & db.rowsep.attribute?
+    & db.align.attribute?
+  db.colspec =
+    
+    ## Specifications for a column in a table
+    element colspec { db.colspec.attlist, empty }
+}
+div {
+  db.spanspec.role.attribute = attribute role { text }
+  db.spanspec.namest.attribute =
+    
+    ## Specifies a starting column by name.
+    attribute namest { text }
+  db.spanspec.nameend.attribute =
+    
+    ## Specifies an ending column by name.
+    attribute nameend { text }
+  db.spanspec.attlist =
+    db.spanspec.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.spanname.attribute
+    & db.spanspec.namest.attribute
+    & db.spanspec.nameend.attribute
+    & db.char.attribute?
+    & db.colsep.attribute?
+    & db.charoff.attribute?
+    & db.rowsep.attribute?
+    & db.align.attribute?
+  db.spanspec =
+    
+    ## Formatting information for a spanned column in a table
+    element spanspec { db.spanspec.attlist, empty }
+}
+div {
+  db.cals.thead.role.attribute = attribute role { text }
+  db.cals.thead.attlist =
+    db.cals.thead.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.valign.attribute?
+  db.cals.thead =
+    
+    ## A table header consisting of one or more rows
+    element thead { db.cals.thead.attlist, db.colspec*, db.row+ }
+}
+div {
+  db.cals.tfoot.role.attribute = attribute role { text }
+  db.cals.tfoot.attlist =
+    db.cals.tfoot.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.valign.attribute?
+  db.cals.tfoot =
+    
+    ## A table footer consisting of one or more rows
+    element tfoot { db.cals.tfoot.attlist, db.colspec*, db.row+ }
+}
+div {
+  db.cals.tbody.role.attribute = attribute role { text }
+  db.cals.tbody.attlist =
+    db.cals.tbody.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.valign.attribute?
+  db.cals.tbody =
+    
+    ## A wrapper for the rows of a table or informal table
+    element tbody { db.cals.tbody.attlist, db.row+ }
+}
+div {
+  db.row.role.attribute = attribute role { text }
+  db.row.attlist =
+    db.row.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.rowsep.attribute?
+    & db.valign.attribute?
+  db.row =
+    
+    ## A row in a table
+    element row { db.row.attlist, (db.entry | db.entrytbl)+ }
+}
+div {
+  db.entry.role.attribute = attribute role { text }
+  db.entry.morerows.attribute =
+    
+    ## Specifies the number of additional rows which this entry occupies. Defaults to zero.
+    attribute morerows { xsd:integer }
+  db.entry.rotate.attribute =
+    
+    ## Specifies the rotation of this entry. A value of 1 (true) rotates the cell 90 degrees counter-clockwise. A value of 0 (false) leaves the cell unrotated.
+    attribute rotate {
+      
+      ## Do not rotate the cell.
+      "0"
+      | 
+        ## Rotate the cell 90 degrees counter-clockwise.
+        "1"
+    }
+  db.entry.attlist =
+    db.entry.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.valign.attribute?
+    & db.char.attribute?
+    & db.colsep.attribute?
+    & db.charoff.attribute?
+    & db.entry.morerows.attribute?
+    & db.column-spec.attributes?
+    & db.rowsep.attribute?
+    & db.entry.rotate.attribute?
+    & db.align.attribute?
+  db.entry =
+    
+    ## A cell in a table
+    [
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:entry"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:table)"
+            "table must not occur among the children or descendants of entry"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:entry"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:informaltable)"
+            "informaltable must not occur among the children or descendants of entry"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element entry {
+      db.entry.attlist, (db.all.inlines* | db.all.blocks*)
+    }
+}
+div {
+  db.entrytbl.role.attribute = attribute role { text }
+  db.entrytbl.tgroupstyle.attribute =
+    
+    ## Additional style information for downstream processing; typically the name of a style.
+    attribute tgroupstyle { text }
+  db.entrytbl.cols.attribute =
+    
+    ## The number of columns in the entry table. Must be an integer greater than zero.
+    attribute cols { xsd:positiveInteger }
+  db.entrytbl.attlist =
+    db.entrytbl.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.char.attribute?
+    & db.charoff.attribute?
+    & db.column-spec.attributes?
+    & db.entrytbl.tgroupstyle.attribute?
+    & db.entrytbl.cols.attribute?
+    & db.colsep.attribute?
+    & db.rowsep.attribute?
+    & db.align.attribute?
+  db.entrytbl =
+    
+    ## A subtable appearing in place of an entry in a table
+    element entrytbl {
+      db.entrytbl.attlist,
+      db.colspec*,
+      db.spanspec*,
+      db.cals.entrytbl.thead?,
+      db.cals.entrytbl.tbody
+    }
+}
+div {
+  db.cals.entrytbl.thead.role.attribute = attribute role { text }
+  db.cals.entrytbl.thead.attlist =
+    db.cals.entrytbl.thead.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.valign.attribute?
+  db.cals.entrytbl.thead =
+    
+    ## A table header consisting of one or more rows
+    element thead {
+      db.cals.entrytbl.thead.attlist, db.colspec*, db.entrytbl.row+
+    }
+}
+div {
+  db.cals.entrytbl.tbody.role.attribute = attribute role { text }
+  db.cals.entrytbl.tbody.attlist =
+    db.cals.entrytbl.tbody.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.valign.attribute?
+  db.cals.entrytbl.tbody =
+    
+    ## A wrapper for the rows of a table or informal table
+    element tbody { db.cals.entrytbl.tbody.attlist, db.entrytbl.row+ }
+}
+div {
+  db.entrytbl.row.role.attribute = attribute role { text }
+  db.entrytbl.row.attlist =
+    db.entrytbl.row.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.rowsep.attribute?
+    & db.valign.attribute?
+  db.entrytbl.row =
+    
+    ## A row in a table
+    element row { db.entrytbl.row.attlist, db.entry+ }
+}
+div {
+  db.cals.table.role.attribute = attribute role { text }
+  db.cals.table.label.attribute = db.label.attribute
+  db.cals.table.attlist =
+    db.cals.table.role.attribute?
+    & db.cals.table.label.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.tabstyle.attribute?
+    & db.floatstyle.attribute?
+    & db.orient.attribute?
+    & db.colsep.attribute?
+    & db.rowsep.attribute?
+    & db.frame.attribute?
+    & db.pgwide.attribute?
+    & 
+      ## Indicates if the short or long title should be used in a List of Tables
+      attribute shortentry {
+        
+        ## Indicates that the full title should be used.
+        "0"
+        | 
+          ## Indicates that the short short title (titleabbrev) should be used.
+          "1"
+      }?
+    & 
+      ## Indicates if the table should appear in a List of Tables
+      attribute tocentry {
+        
+        ## Indicates that the table should not occur in the List of Tables.
+        "0"
+        | 
+          ## Indicates that the table should appear in the List of Tables.
+          "1"
+      }?
+    & db.rowheader.attribute?
+  db.cals.table.info = db._info.title.onlyreq
+  db.cals.table =
+    
+    ## A formal table in a document
+    [
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:table"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:example)"
+            "example must not occur among the children or descendants of table"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:table"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:figure)"
+            "figure must not occur among the children or descendants of table"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:table"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:equation)"
+            "equation must not occur among the children or descendants of table"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:table"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:caution)"
+            "caution must not occur among the children or descendants of table"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:table"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:important)"
+            "important must not occur among the children or descendants of table"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:table"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:note)"
+            "note must not occur among the children or descendants of table"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:table"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:tip)"
+            "tip must not occur among the children or descendants of table"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:table"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:warning)"
+            "warning must not occur among the children or descendants of table"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element table {
+      db.cals.table.attlist,
+      db.cals.table.info,
+      (db.alt? & db.indexing.inlines* & db.textobject*),
+      (db.mediaobject+ | db.tgroup+),
+      db.caption?
+    }
+}
+div {
+  db.cals.informaltable.role.attribute = attribute role { text }
+  db.cals.informaltable.attlist =
+    db.cals.informaltable.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.tabstyle.attribute?
+    & db.floatstyle.attribute?
+    & db.orient.attribute?
+    & db.colsep.attribute?
+    & db.rowsep.attribute?
+    & db.frame.attribute?
+    & db.pgwide.attribute?
+    & db.rowheader.attribute?
+  db.cals.informaltable.info = db._info.title.forbidden
+  db.cals.informaltable =
+    
+    ## A table without a title
+    element informaltable {
+      db.cals.informaltable.attlist,
+      db.cals.informaltable.info,
+      (db.alt? & db.indexing.inlines* & db.textobject*),
+      (db.mediaobject+ | db.tgroup+),
+      db.caption?
+    }
+}
+db.html.coreattrs =
+  
+  ## This attribute assigns a class name or set of class names to an element. Any number of elements may be assigned the same class name or names. Multiple class names must be separated by white space characters.
+  attribute class { text }?
+  & 
+    ## This attribute specifies style information for the current element.
+    attribute style { text }?
+  & 
+    ## This attribute offers advisory information about the element for which it is set.
+    attribute title { text }?
+db.html.i18n =
+  
+  ## This attribute specifies the base language of an element's attribute values and text content. The default value of this attribute is unknown.
+  attribute lang { text }?
+db.html.events =
+  
+  ## Occurs when the pointing device button is clicked over an element.
+  attribute onclick { text }?
+  & 
+    ## Occurs when the pointing device button is double clicked over an element.
+    attribute ondblclick { text }?
+  & 
+    ## Occurs when the pointing device button is pressed over an element.
+    attribute onmousedown { text }?
+  & 
+    ## Occurs when the pointing device button is released over an element.
+    attribute onmouseup { text }?
+  & 
+    ## Occurs when the pointing device is moved onto an element.
+    attribute onmouseover { text }?
+  & 
+    ## Occurs when the pointing device is moved while it is over an element.
+    attribute onmousemove { text }?
+  & 
+    ## Occurs when the pointing device is moved away from an element.
+    attribute onmouseout { text }?
+  & 
+    ## Occurs when a key is pressed and released over an element.
+    attribute onkeypress { text }?
+  & 
+    ## Occurs when a key is pressed down over an element.
+    attribute onkeydown { text }?
+  & 
+    ## Occurs when a key is released over an element.
+    attribute onkeyup { text }?
+db.html.attrs =
+  db.common.attributes
+  & db.html.coreattrs
+  & db.html.i18n
+  & db.html.events
+db.html.cellhalign =
+  
+  ## Specifies the alignment of data and the justification of text in a cell.
+  attribute align {
+    
+    ## Left-flush data/Left-justify text. This is the default value for table data.
+    "left"
+    | 
+      ## Center data/Center-justify text. This is the default value for table headers.
+      "center"
+    | 
+      ## Right-flush data/Right-justify text.
+      "right"
+    | 
+      ## Double-justify text.
+      "justify"
+    | 
+      ## Align text around a specific character. If a user agent doesn't support character alignment, behavior in the presence of this value is unspecified.
+      "char"
+  }?
+  & 
+    ## This attribute specifies a single character within a text fragment to act as an axis for alignment. The default value for this attribute is the decimal point character for the current language as set by the lang attribute (e.g., the period in English and the comma in French). User agents are not required to support this attribute.
+    attribute char { text }?
+  & 
+    ## When present, this attribute specifies the offset to the first occurrence of the alignment character on each line. If a line doesn't include the alignment character, it should be horizontally shifted to end at the alignment position. When charoff is used to set the offset of an alignment character, the direction of offset is determined by the current text direction (set by the dir attribute). In left-to-right texts (the default), offset is from the left margin. In right-to-left texts, offset is from the right margin. User agents are not required to support this attribute.
+    attribute charoff {
+      xsd:integer >> a:documentation [ "An explicit offset." ]
+      | xsd:string { pattern = "[0-9]+%" }
+        >> a:documentation [ "A percentage offset." ]
+    }?
+db.html.cellvalign =
+  
+  ## Specifies the vertical position of data within a cell.
+  attribute valign {
+    
+    ## Cell data is flush with the top of the cell.
+    "top"
+    | 
+      ## Cell data is centered vertically within the cell. This is the default value.
+      "middle"
+    | 
+      ## Cell data is flush with the bottom of the cell.
+      "bottom"
+    | 
+      ## All cells in the same row as a cell whose valign attribute has this value should have their textual data positioned so that the first text line occurs on a baseline common to all cells in the row. This constraint does not apply to subsequent text lines in these cells.
+      "baseline"
+  }?
+db.html.table.attributes =
+  
+  ## Provides a summary of the table's purpose and structure for user agents rendering to non-visual media such as speech and Braille.
+  attribute summary { text }?
+  & 
+    ## Specifies the desired width of the entire table and is intended for visual user agents. When the value is a percentage value, the value is relative to the user agent's available horizontal space. In the absence of any width specification, table width is determined by the user agent.
+    attribute width {
+      xsd:integer >> a:documentation [ "An explicit width." ]
+      | xsd:string { pattern = "[0-9]+%" }
+        >> a:documentation [ "A percentage width." ]
+    }?
+  & 
+    ## Specifies the width (in pixels only) of the frame around a table.
+    attribute border { xsd:nonNegativeInteger }?
+  & 
+    ## Specifies which sides of the frame surrounding a table will be visible.
+    attribute frame {
+      
+      ## No sides. This is the default value.
+      "void"
+      | 
+        ## The top side only.
+        "above"
+      | 
+        ## The bottom side only.
+        "below"
+      | 
+        ## The top and bottom sides only.
+        "hsides"
+      | 
+        ## The left-hand side only.
+        "lhs"
+      | 
+        ## The right-hand side only.
+        "rhs"
+      | 
+        ## The right and left sides only.
+        "vsides"
+      | 
+        ## All four sides.
+        "box"
+      | 
+        ## All four sides.
+        "border"
+    }?
+  & 
+    ## Specifies which rules will appear between cells within a table. The rendering of rules is user agent dependent.
+    attribute rules {
+      
+      ## No rules. This is the default value.
+      "none"
+      | 
+        ## Rules will appear between row groups (see thead, tfoot, and tbody) and column groups (see colgroup and col) only.
+        "groups"
+      | 
+        ## Rules will appear between rows only.
+        "rows"
+      | 
+        ## Rules will appear between columns only.
+        "cols"
+      | 
+        ## Rules will appear between all rows and columns.
+        "all"
+    }?
+  & 
+    ## Specifies how much space the user agent should leave between the left side of the table and the left-hand side of the leftmost column, the top of the table and the top side of the topmost row, and so on for the right and bottom of the table. The attribute also specifies the amount of space to leave between cells.
+    attribute cellspacing {
+      xsd:integer >> a:documentation [ "An explicit spacing." ]
+      | xsd:string { pattern = "[0-9]+%" }
+        >> a:documentation [ "A percentage spacing." ]
+    }?
+  & 
+    ## Specifies the amount of space between the border of the cell and its contents. If the value of this attribute is a pixel length, all four margins should be this distance from the contents. If the value of the attribute is a percentage length, the top and bottom margins should be equally separated from the content based on a percentage of the available vertical space, and the left and right margins should be equally separated from the content based on a percentage of the available horizontal space.
+    attribute cellpadding {
+      xsd:integer >> a:documentation [ "An explicit padding." ]
+      | xsd:string { pattern = "[0-9]+%" }
+        >> a:documentation [ "A percentage padding." ]
+    }?
+db.html.tablecell.attributes =
+  
+  ## Provides an abbreviated form of the cell's content and may be rendered by user agents when appropriate in place of the cell's content. Abbreviated names should be short since user agents may render them repeatedly. For instance, speech synthesizers may render the abbreviated headers relating to a particular cell before rendering that cell's content.
+  attribute abbr { text }?
+  & 
+    ## This attribute may be used to place a cell into conceptual categories that can be considered to form axes in an n-dimensional space. User agents may give users access to these categories (e.g., the user may query the user agent for all cells that belong to certain categories, the user agent may present a table in the form of a table of contents, etc.). Please consult an HTML reference for more details.
+    attribute axis { text }?
+  & 
+    ## Specifies the list of header cells that provide header information for the current data cell. The value of this attribute is a space-separated list of cell names; those cells must be named by setting their id attribute. Authors generally use the headers attribute to help non-visual user agents render header information about data cells (e.g., header information is spoken prior to the cell data), but the attribute may also be used in conjunction with style sheets.
+    attribute headers { text }?
+  & 
+    ## Specifies the set of data cells for which the current header cell provides header information. This attribute may be used in place of the headers attribute, particularly for simple tables.
+    attribute scope {
+      
+      ## The current cell provides header information for the rest of the row that contains it
+      "row"
+      | 
+        ## The current cell provides header information for the rest of the column that contains it.
+        "col"
+      | 
+        ## The header cell provides header information for the rest of the row group that contains it.
+        "rowgroup"
+      | 
+        ## The header cell provides header information for the rest of the column group that contains it.
+        "colgroup"
+    }?
+  & 
+    ## Specifies the number of rows spanned by the current cell. The default value of this attribute is one (1
+    ## ). The value zero (0
+    ## ) means that the cell spans all rows from the current row to the last row of the table section (thead
+    ## , tbody
+    ## , or tfoot
+    ## ) in which the cell is defined.
+    attribute rowspan { xsd:nonNegativeInteger }?
+  & 
+    ## Specifies the number of columns spanned by the current cell. The default value of this attribute is one (1
+    ## ). The value zero (0
+    ## ) means that the cell spans all columns from the current column to the last column of the column group (colgroup
+    ## ) in which the cell is defined.
+    attribute colspan { xsd:nonNegativeInteger }?
+db.html.table.info = db._info.title.forbidden
+db.html.table.model =
+  db.html.table.info?,
+  db.html.caption,
+  (db.html.col* | db.html.colgroup*),
+  db.html.thead?,
+  db.html.tfoot?,
+  (db.html.tbody+ | db.html.tr+)
+db.html.informaltable.info = db._info.title.forbidden
+db.html.informaltable.model =
+  db.html.informaltable.info?,
+  (db.html.col* | db.html.colgroup*),
+  db.html.thead?,
+  db.html.tfoot?,
+  (db.html.tbody+ | db.html.tr+)
+div {
+  db.html.table.role.attribute = attribute role { text }
+  db.html.table.label.attribute = db.label.attribute
+  db.html.table.attlist =
+    db.html.attrs
+    & db.html.table.attributes
+    & db.html.table.role.attribute?
+    & db.html.table.label.attribute?
+    & db.orient.attribute?
+    & db.pgwide.attribute?
+    & db.tabstyle.attribute?
+    & db.floatstyle.attribute?
+  db.html.table =
+    
+    ## A formal (captioned) HTML table in a document
+    [
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:table"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:example)"
+            "example must not occur among the children or descendants of table"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:table"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:figure)"
+            "figure must not occur among the children or descendants of table"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:table"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:equation)"
+            "equation must not occur among the children or descendants of table"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:table"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:caution)"
+            "caution must not occur among the children or descendants of table"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:table"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:important)"
+            "important must not occur among the children or descendants of table"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:table"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:note)"
+            "note must not occur among the children or descendants of table"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:table"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:tip)"
+            "tip must not occur among the children or descendants of table"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:table"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:warning)"
+            "warning must not occur among the children or descendants of table"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element table { db.html.table.attlist, db.html.table.model }
+}
+div {
+  db.html.informaltable.role.attribute = attribute role { text }
+  db.html.informaltable.label.attribute = db.label.attribute
+  db.html.informaltable.attlist =
+    db.html.attrs
+    & db.html.table.attributes
+    & db.html.informaltable.role.attribute?
+    & db.html.informaltable.label.attribute?
+    & db.orient.attribute?
+    & db.pgwide.attribute?
+    & db.tabstyle.attribute?
+    & db.floatstyle.attribute?
+  db.html.informaltable =
+    
+    ## An HTML table without a title
+    element informaltable {
+      db.html.informaltable.attlist, db.html.informaltable.model
+    }
+}
+div {
+  db.html.caption.attlist = db.html.attrs
+  db.html.caption =
+    
+    ## An HTML table caption
+    [
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:caption"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:example)"
+            "example must not occur among the children or descendants of caption"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:caption"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:figure)"
+            "figure must not occur among the children or descendants of caption"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:caption"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:table)"
+            "table must not occur among the children or descendants of caption"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:caption"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:equation)"
+            "equation must not occur among the children or descendants of caption"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:caption"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:sidebar)"
+            "sidebar must not occur among the children or descendants of caption"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:caption"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:task)"
+            "task must not occur among the children or descendants of caption"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:caption"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:caution)"
+            "caution must not occur among the children or descendants of caption"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:caption"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:important)"
+            "important must not occur among the children or descendants of caption"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:caption"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:note)"
+            "note must not occur among the children or descendants of caption"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:caption"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:tip)"
+            "tip must not occur among the children or descendants of caption"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:caption"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:warning)"
+            "warning must not occur among the children or descendants of caption"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element caption { db.html.caption.attlist, db.all.inlines* }
+}
+div {
+  db.html.col.attlist =
+    db.html.attrs
+    & 
+      ## This attribute, whose value must be an integer > 0, specifies the number of columns spanned
+      ##  by the col
+      ##  element; the col
+      ##  element shares its attributes with all the columns it spans. The default value for this attribute is 1 (i.e., a single column). If the span attribute is set to N > 1, the current col
+      ##  element shares its attributes with the next N-1 columns.
+      attribute span { xsd:nonNegativeInteger }?
+    & 
+      ## Specifies a default width for each column spanned by the current col
+      ##  element. It has the same meaning as the width
+      ##  attribute for the colgroup
+      ##  element and overrides it.
+      attribute width { text }?
+    & db.html.cellhalign
+    & db.html.cellvalign
+  db.html.col =
+    
+    ## Specifications for a column in an HTML table
+    element col { db.html.col.attlist, empty }
+}
+div {
+  db.html.colgroup.attlist =
+    db.html.attrs
+    & 
+      ## This attribute, which must be an integer > 0, specifies the number of columns in a column group. In the absence of a span attribute, each colgroup
+      ##  defines a column group containing one column. If the span attribute is set to N > 0, the current colgroup
+      ##  element defines a column group containing N columns. User agents must ignore this attribute if the colgroup
+      ##  element contains one or more col
+      ##  elements.
+      attribute span { xsd:nonNegativeInteger }?
+    & 
+      ## This attribute specifies a default width for each column in the current column group. In addition to the standard pixel, percentage, and relative values, this attribute allows the special form 0*
+      ##  (zero asterisk) which means that the width of the each column in the group should be the minimum width necessary to hold the column's contents. This implies that a column's entire contents must be known before its width may be correctly computed. Authors should be aware that specifying 0*
+      ##  will prevent visual user agents from rendering a table incrementally. This attribute is overridden for any column in the column group whose width is specified via a col
+      ##  element.
+      attribute width { text }?
+    & db.html.cellhalign
+    & db.html.cellvalign
+  db.html.colgroup =
+    
+    ## A group of columns in an HTML table
+    element colgroup { db.html.colgroup.attlist, db.html.col* }
+}
+div {
+  db.html.thead.attlist =
+    db.html.attrs & db.html.cellhalign & db.html.cellvalign
+  db.html.thead =
+    
+    ## A table header consisting of one or more rows in an HTML table
+    element thead { db.html.thead.attlist, db.html.tr+ }
+}
+div {
+  db.html.tfoot.attlist =
+    db.html.attrs & db.html.cellhalign & db.html.cellvalign
+  db.html.tfoot =
+    
+    ## A table footer consisting of one or more rows in an HTML table
+    element tfoot { db.html.tfoot.attlist, db.html.tr+ }
+}
+div {
+  db.html.tbody.attlist =
+    db.html.attrs & db.html.cellhalign & db.html.cellvalign
+  db.html.tbody =
+    
+    ## A wrapper for the rows of an HTML table or informal HTML table
+    element tbody { db.html.tbody.attlist, db.html.tr+ }
+}
+div {
+  db.html.tr.attlist =
+    db.html.attrs & db.html.cellhalign & db.html.cellvalign
+  db.html.tr =
+    
+    ## A row in an HTML table
+    element tr { db.html.tr.attlist, (db.html.th | db.html.td)+ }
+}
+div {
+  db.html.th.attlist =
+    db.html.attrs
+    & db.html.tablecell.attributes
+    & db.html.cellhalign
+    & db.html.cellvalign
+  db.html.th =
+    
+    ## A table header entry in an HTML table
+    element th {
+      db.html.th.attlist, (db.all.inlines* | db.all.blocks*)
+    }
+}
+div {
+  db.html.td.attlist =
+    db.html.attrs
+    & db.html.tablecell.attributes
+    & db.html.cellhalign
+    & db.html.cellvalign
+  db.html.td =
+    
+    ## A table entry in an HTML table
+    element td {
+      db.html.td.attlist, (db.all.inlines* | db.all.blocks*)
+    }
+}
+div {
+  db.msgset.role.attribute = attribute role { text }
+  db.msgset.attlist =
+    db.msgset.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.msgset.info = db._info.title.only
+  db.msgset =
+    
+    ## A detailed set of messages, usually error messages
+    element msgset {
+      db.msgset.attlist,
+      db.msgset.info,
+      (db.msgentry+ | db.simplemsgentry+)
+    }
+}
+div {
+  db.msgentry.role.attribute = attribute role { text }
+  db.msgentry.attlist =
+    db.msgentry.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.msgentry =
+    
+    ## A wrapper for an entry in a message set
+    element msgentry {
+      db.msgentry.attlist, db.msg+, db.msginfo?, db.msgexplan*
+    }
+}
+div {
+  db.simplemsgentry.role.attribute = attribute role { text }
+  db.simplemsgentry.msgaud.attribute =
+    
+    ## The audience to which the message relevant
+    attribute msgaud { text }
+  db.simplemsgentry.msgorig.attribute =
+    
+    ## The origin of the message
+    attribute msgorig { text }
+  db.simplemsgentry.msglevel.attribute =
+    
+    ## The level of importance or severity of a message
+    attribute msglevel { text }
+  db.simplemsgentry.attlist =
+    db.simplemsgentry.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.simplemsgentry.msgaud.attribute?
+    & db.simplemsgentry.msgorig.attribute?
+    & db.simplemsgentry.msglevel.attribute?
+  db.simplemsgentry =
+    
+    ## A wrapper for a simpler entry in a message set
+    element simplemsgentry {
+      db.simplemsgentry.attlist, db.msgtext, db.msgexplan+
+    }
+}
+div {
+  db.msg.role.attribute = attribute role { text }
+  db.msg.attlist =
+    db.msg.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.msg.info = db._info.title.only
+  db.msg =
+    
+    ## A message in a message set
+    element msg {
+      db.msg.attlist, db.msg.info, db.msgmain, (db.msgsub | db.msgrel)*
+    }
+}
+div {
+  db.msgmain.role.attribute = attribute role { text }
+  db.msgmain.attlist =
+    db.msgmain.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.msgmain.info = db._info.title.only
+  db.msgmain =
+    
+    ## The primary component of a message in a message set 
+    element msgmain { db.msgmain.attlist, db.msgmain.info, db.msgtext }
+}
+div {
+  db.msgsub.role.attribute = attribute role { text }
+  db.msgsub.attlist =
+    db.msgsub.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.msgsub.info = db._info.title.only
+  db.msgsub =
+    
+    ## A subcomponent of a message in a message set
+    element msgsub { db.msgsub.attlist, db.msgsub.info, db.msgtext }
+}
+div {
+  db.msgrel.role.attribute = attribute role { text }
+  db.msgrel.attlist =
+    db.msgrel.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.msgrel.info = db._info.title.only
+  db.msgrel =
+    
+    ## A related component of a message in a message set
+    element msgrel { db.msgrel.attlist, db.msgrel.info, db.msgtext }
+}
+div {
+  db.msgtext.role.attribute = attribute role { text }
+  db.msgtext.attlist =
+    db.msgtext.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.msgtext =
+    
+    ## The actual text of a message component in a message set
+    element msgtext { db.msgtext.attlist, db.all.blocks+ }
+}
+div {
+  db.msginfo.role.attribute = attribute role { text }
+  db.msginfo.attlist =
+    db.msginfo.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.msginfo =
+    
+    ## Information about a message in a message set
+    element msginfo {
+      db.msginfo.attlist, (db.msglevel | db.msgorig | db.msgaud)*
+    }
+}
+div {
+  db.msglevel.role.attribute = attribute role { text }
+  db.msglevel.attlist =
+    db.msglevel.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.msglevel =
+    
+    ## The level of importance or severity of a message in a message set
+    element msglevel { db.msglevel.attlist, db._text }
+}
+div {
+  db.msgorig.role.attribute = attribute role { text }
+  db.msgorig.attlist =
+    db.msgorig.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.msgorig =
+    
+    ## The origin of a message in a message set
+    element msgorig { db.msgorig.attlist, db._text }
+}
+div {
+  db.msgaud.role.attribute = attribute role { text }
+  db.msgaud.attlist =
+    db.msgaud.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.msgaud =
+    
+    ## The audience to which a message in a message set is relevant
+    element msgaud { db.msgaud.attlist, db._text }
+}
+div {
+  db.msgexplan.role.attribute = attribute role { text }
+  db.msgexplan.attlist =
+    db.msgexplan.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.msgexplan.info = db._info.title.only
+  db.msgexplan =
+    
+    ## Explanatory material relating to a message in a message set
+    element msgexplan {
+      db.msgexplan.attlist, db.msgexplan.info, db.all.blocks+
+    }
+}
+div {
+  db.qandaset.role.attribute = attribute role { text }
+  db.qandaset.defaultlabel.enumeration =
+    
+    ## No labels
+    "none"
+    | 
+      ## Numeric labels
+      "number"
+    | 
+      ## "Q:" and "A:" labels
+      "qanda"
+  db.qandaset.defaultlabel.attribute =
+    
+    ## Specifies the default labelling
+    attribute defaultlabel { db.qandaset.defaultlabel.enumeration }
+  db.qandaset.attlist =
+    db.qandaset.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.qandaset.defaultlabel.attribute?
+  db.qandaset.info = db._info.title.only
+  db.qandaset =
+    
+    ## A question-and-answer set
+    element qandaset {
+      db.qandaset.attlist,
+      db.qandaset.info,
+      db.all.blocks*,
+      (db.qandadiv+ | db.qandaentry+)
+    }
+}
+div {
+  db.qandadiv.role.attribute = attribute role { text }
+  db.qandadiv.attlist =
+    db.qandadiv.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.qandadiv.info = db._info.title.only
+  db.qandadiv =
+    
+    ## A titled division in a qandaset
+    element qandadiv {
+      db.qandadiv.attlist,
+      db.qandadiv.info,
+      db.all.blocks*,
+      (db.qandadiv+ | db.qandaentry+)
+    }
+}
+div {
+  db.qandaentry.role.attribute = attribute role { text }
+  db.qandaentry.attlist =
+    db.qandaentry.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.qandaentry.info = db._info.title.only
+  db.qandaentry =
+    
+    ## A question/answer set within a qandaset
+    element qandaentry {
+      db.qandaentry.attlist, db.qandaentry.info, db.question, db.answer*
+    }
+}
+div {
+  db.question.role.attribute = attribute role { text }
+  db.question.attlist =
+    db.question.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.question =
+    
+    ## A question in a qandaset
+    element question { db.question.attlist, db.label?, db.all.blocks+ }
+}
+div {
+  db.answer.role.attribute = attribute role { text }
+  db.answer.attlist =
+    db.answer.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.answer =
+    
+    ## An answer to a question posed in a qandaset
+    element answer { db.answer.attlist, db.label?, db.all.blocks+ }
+}
+div {
+  db.label.role.attribute = attribute role { text }
+  db.label.attlist =
+    db.label.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.label =
+    
+    ## A label on a question or answer
+    element label { db.label.attlist, db._text }
+}
+db.math.inlines = db.inlineequation
+db.equation.content = (db.mediaobject+ | db.mathphrase+) | db._any.mml+
+db.inlineequation.content =
+  (db.inlinemediaobject+ | db.mathphrase+) | db._any.mml+
+div {
+  db.equation.role.attribute = attribute role { text }
+  db.equation.label.attribute = db.label.attribute
+  db.equation.attlist =
+    db.equation.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.equation.label.attribute?
+    & db.pgwide.attribute?
+    & db.floatstyle.attribute?
+  db.equation.info = db._info.title.only
+  db.equation =
+    
+    ## A displayed mathematical equation
+    [
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:equation"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:example)"
+            "example must not occur among the children or descendants of equation"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:equation"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:figure)"
+            "figure must not occur among the children or descendants of equation"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:equation"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:table)"
+            "table must not occur among the children or descendants of equation"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:equation"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:equation)"
+            "equation must not occur among the children or descendants of equation"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:equation"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:caution)"
+            "caution must not occur among the children or descendants of equation"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:equation"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:important)"
+            "important must not occur among the children or descendants of equation"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:equation"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:note)"
+            "note must not occur among the children or descendants of equation"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:equation"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:tip)"
+            "tip must not occur among the children or descendants of equation"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:equation"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:warning)"
+            "warning must not occur among the children or descendants of equation"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element equation {
+      db.equation.attlist,
+      db.equation.info,
+      db.alt?,
+      db.equation.content,
+      db.caption?
+    }
+}
+div {
+  db.informalequation.role.attribute = attribute role { text }
+  db.informalequation.attlist =
+    db.informalequation.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.pgwide.attribute?
+    & db.floatstyle.attribute?
+  db.informalequation.info = db._info.title.forbidden
+  db.informalequation =
+    
+    ## A displayed mathematical equation without a title
+    element informalequation {
+      db.informalequation.attlist,
+      db.informalequation.info,
+      db.alt?,
+      db.equation.content,
+      db.caption?
+    }
+}
+div {
+  db.inlineequation.role.attribute = attribute role { text }
+  db.inlineequation.attlist =
+    db.inlineequation.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.inlineequation =
+    
+    ## A mathematical equation or expression occurring inline
+    element inlineequation {
+      db.inlineequation.attlist, db.alt?, db.inlineequation.content
+    }
+}
+div {
+  db.mathphrase.role.attribute = attribute role { text }
+  db.mathphrase.attlist =
+    db.mathphrase.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.mathphrase =
+    
+    ## A mathematical phrase that can be represented with ordinary text and a small amount of markup
+    element mathphrase {
+      db.mathphrase.attlist,
+      (db._text | db.ubiq.inlines | db._emphasis)*
+    }
+}
+db.imagedata.mathml.content = db._any.mml
+div {
+  db.imagedata.mathml.role.attribute = attribute role { text }
+  db.imagedata.mathml.attlist =
+    db.imagedata.mathml.role.attribute?
+    & db.common.attributes
+    & 
+      ## Specifies that the format of the data is MathML
+      attribute format {
+        
+        ## Specifies MathML.
+        "mathml"
+      }?
+    & db.imagedata.align.attribute?
+    & db.imagedata.valign.attribute?
+    & db.imagedata.width.attribute?
+    & db.imagedata.contentwidth.attribute?
+    & db.imagedata.scalefit.attribute?
+    & db.imagedata.scale.attribute?
+    & db.imagedata.depth.attribute?
+    & db.imagedata.contentdepth.attribute?
+  db.imagedata.mathml.info = db._info.title.forbidden
+  db.imagedata.mathml =
+    
+    ## A MathML expression in a media object
+    element imagedata {
+      db.imagedata.mathml.attlist,
+      db.imagedata.mathml.info,
+      db.imagedata.mathml.content+
+    }
+}
+div {
+  db._any.mml =
+    
+    ## Any element from the MathML namespace
+    element mml:* { (db._any.attribute | text | db._any)* }
+}
+db.imagedata.svg.content = db._any.svg
+div {
+  db.imagedata.svg.role.attribute = attribute role { text }
+  db.imagedata.svg.attlist =
+    db.imagedata.svg.role.attribute?
+    & db.common.attributes
+    & 
+      ## Specifies that the format of the data is SVG
+      attribute format {
+        
+        ## Specifies SVG.
+        "svg"
+      }?
+    & db.imagedata.align.attribute?
+    & db.imagedata.valign.attribute?
+    & db.imagedata.width.attribute?
+    & db.imagedata.contentwidth.attribute?
+    & db.imagedata.scalefit.attribute?
+    & db.imagedata.scale.attribute?
+    & db.imagedata.depth.attribute?
+    & db.imagedata.contentdepth.attribute?
+  db.imagedata.svg.info = db._info.title.forbidden
+  db.imagedata.svg =
+    
+    ## An SVG drawing in a media object
+    element imagedata {
+      db.imagedata.svg.attlist,
+      db.imagedata.svg.info,
+      db.imagedata.svg.content+
+    }
+}
+div {
+  db._any.svg =
+    
+    ## Any element from the SVG namespace
+    element svg:* { (db._any.attribute | text | db._any)* }
+}
+db.markup.inlines =
+  db.tag
+  | db.markup
+  | db.token
+  | db.symbol
+  | db.literal
+  | db.code
+  | db.constant
+  | db.email
+  | db.uri
+div {
+  db.markup.role.attribute = attribute role { text }
+  db.markup.attlist =
+    db.markup.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.markup =
+    
+    ## A string of formatting markup in text that is to be represented literally
+    element markup { db.markup.attlist, db._text }
+}
+div {
+  db.tag.role.attribute = attribute role { text }
+  db.tag.class.enumeration =
+    
+    ## An attribute
+    "attribute"
+    | 
+      ## An attribute value
+      "attvalue"
+    | 
+      ## An element
+      "element"
+    | 
+      ## An empty element tag
+      "emptytag"
+    | 
+      ## An end tag
+      "endtag"
+    | 
+      ## A general entity
+      "genentity"
+    | 
+      ## The local name part of a qualified name
+      "localname"
+    | 
+      ## A namespace
+      "namespace"
+    | 
+      ## A numeric character reference
+      "numcharref"
+    | 
+      ## A parameter entity
+      "paramentity"
+    | 
+      ## A processing instruction
+      "pi"
+    | 
+      ## The prefix part of a qualified name
+      "prefix"
+    | 
+      ## An SGML comment
+      "comment"
+    | 
+      ## A start tag
+      "starttag"
+    | 
+      ## An XML processing instruction
+      "xmlpi"
+  db.tag.class.attribute =
+    
+    ## Identifies the nature of the tag content
+    attribute class { db.tag.class.enumeration }
+  db.tag.namespace.attribute =
+    
+    ## Identifies the namespace of the tag content
+    attribute namespace { xsd:anyURI }
+  db.tag.attlist =
+    db.tag.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.tag.class.attribute?
+    & db.tag.namespace.attribute?
+  db.tag =
+    
+    ## A component of XML (or SGML) markup
+    element tag { db.tag.attlist, (db._text | db.tag)* }
+}
+div {
+  db.symbol.class.attribute =
+    
+    ## Identifies the class of symbol
+    attribute class {
+      
+      ## The value is a limit of some kind
+      "limit"
+    }
+  db.symbol.role.attribute = attribute role { text }
+  db.symbol.attlist =
+    db.symbol.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.symbol.class.attribute?
+  db.symbol =
+    
+    ## A name that is replaced by a value before processing
+    element symbol { db.symbol.attlist, db._text }
+}
+div {
+  db.token.role.attribute = attribute role { text }
+  db.token.attlist =
+    db.token.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.token =
+    
+    ## A unit of information
+    element token { db.token.attlist, db._text }
+}
+div {
+  db.literal.role.attribute = attribute role { text }
+  db.literal.attlist =
+    db.literal.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.literal =
+    
+    ## Inline text that is some literal value
+    element literal { db.literal.attlist, db._text }
+}
+div {
+  code.language.attribute =
+    
+    ## Identifies the (computer) language of the code fragment
+    attribute language { text }
+  db.code.role.attribute = attribute role { text }
+  db.code.attlist =
+    db.code.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & code.language.attribute?
+  db.code =
+    
+    ## An inline code fragment
+    element code {
+      db.code.attlist, (db.programming.inlines | db._text)*
+    }
+}
+div {
+  db.constant.class.attribute =
+    
+    ## Identifies the class of constant
+    attribute class {
+      
+      ## The value is a limit of some kind
+      "limit"
+    }
+  db.constant.role.attribute = attribute role { text }
+  db.constant.attlist =
+    db.constant.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.constant.class.attribute?
+  db.constant =
+    
+    ## A programming or system constant
+    element constant { db.constant.attlist, db._text }
+}
+div {
+  db.productname.role.attribute = attribute role { text }
+  db.productname.class.enumeration =
+    
+    ## A name with a copyright
+    "copyright"
+    | 
+      ## A name with a registered copyright
+      "registered"
+    | 
+      ## A name of a service
+      "service"
+    | 
+      ## A name which is trademarked
+      "trade"
+  db.productname.class.attribute =
+    
+    ## Specifies the class of product name
+    attribute class { db.productname.class.enumeration }
+  db.productname.attlist =
+    db.productname.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.productname.class.attribute?
+  db.productname =
+    
+    ## The formal name of a product
+    element productname { db.productname.attlist, db._text }
+}
+div {
+  db.productnumber.role.attribute = attribute role { text }
+  db.productnumber.attlist =
+    db.productnumber.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.productnumber =
+    
+    ## A number assigned to a product
+    element productnumber { db.productnumber.attlist, db._text }
+}
+div {
+  db.database.class.enumeration =
+    
+    ## An alternate or secondary key
+    "altkey"
+    | 
+      ## A constraint
+      "constraint"
+    | 
+      ## A data type
+      "datatype"
+    | 
+      ## A field
+      "field"
+    | 
+      ## A foreign key
+      "foreignkey"
+    | 
+      ## A group
+      "group"
+    | 
+      ## An index
+      "index"
+    | 
+      ## The first or primary key
+      "key1"
+    | 
+      ## An alternate or secondary key
+      "key2"
+    | 
+      ## A name
+      "name"
+    | 
+      ## The primary key
+      "primarykey"
+    | 
+      ## A (stored) procedure
+      "procedure"
+    | 
+      ## A record
+      "record"
+    | 
+      ## A rule
+      "rule"
+    | 
+      ## The secondary key
+      "secondarykey"
+    | 
+      ## A table
+      "table"
+    | 
+      ## A user
+      "user"
+    | 
+      ## A view
+      "view"
+  db.database.class.attribute =
+    
+    ## Identifies the class of database artifact
+    attribute class { db.database.class.enumeration }
+  db.database.role.attribute = attribute role { text }
+  db.database.attlist =
+    db.database.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.database.class.attribute?
+  db.database =
+    
+    ## The name of a database, or part of a database
+    element database { db.database.attlist, db._text }
+}
+div {
+  db.application.class.enumeration =
+    
+    ## A hardware application
+    "hardware"
+    | 
+      ## A software application
+      "software"
+  db.application.class.attribute =
+    
+    ## Identifies the class of application
+    attribute class { db.application.class.enumeration }
+  db.application.role.attribute = attribute role { text }
+  db.application.attlist =
+    db.application.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.application.class.attribute?
+  db.application =
+    
+    ## The name of a software program
+    element application { db.application.attlist, db._text }
+}
+div {
+  db.hardware.role.attribute = attribute role { text }
+  db.hardware.attlist =
+    db.hardware.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.hardware =
+    
+    ## A physical part of a computer system
+    element hardware { db.hardware.attlist, db._text }
+}
+db.gui.inlines =
+  db.guiicon
+  | db.guibutton
+  | db.guimenuitem
+  | db.guimenu
+  | db.guisubmenu
+  | db.guilabel
+  | db.menuchoice
+  | db.mousebutton
+div {
+  db.guibutton.role.attribute = attribute role { text }
+  db.guibutton.attlist =
+    db.guibutton.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.guibutton =
+    
+    ## The text on a button in a GUI
+    element guibutton {
+      db.guibutton.attlist,
+      (db._text | db.accel | db.superscript | db.subscript)*
+    }
+}
+div {
+  db.guiicon.role.attribute = attribute role { text }
+  db.guiicon.attlist =
+    db.guiicon.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.guiicon =
+    
+    ## Graphic and/or text appearing as a icon in a GUI
+    element guiicon {
+      db.guiicon.attlist,
+      (db._text | db.accel | db.superscript | db.subscript)*
+    }
+}
+div {
+  db.guilabel.role.attribute = attribute role { text }
+  db.guilabel.attlist =
+    db.guilabel.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.guilabel =
+    
+    ## The text of a label in a GUI
+    element guilabel {
+      db.guilabel.attlist,
+      (db._text | db.accel | db.superscript | db.subscript)*
+    }
+}
+div {
+  db.guimenu.role.attribute = attribute role { text }
+  db.guimenu.attlist =
+    db.guimenu.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.guimenu =
+    
+    ## The name of a menu in a GUI
+    element guimenu {
+      db.guimenu.attlist,
+      (db._text | db.accel | db.superscript | db.subscript)*
+    }
+}
+div {
+  db.guimenuitem.role.attribute = attribute role { text }
+  db.guimenuitem.attlist =
+    db.guimenuitem.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.guimenuitem =
+    
+    ## The name of a terminal menu item in a GUI
+    element guimenuitem {
+      db.guimenuitem.attlist,
+      (db._text | db.accel | db.superscript | db.subscript)*
+    }
+}
+div {
+  db.guisubmenu.role.attribute = attribute role { text }
+  db.guisubmenu.attlist =
+    db.guisubmenu.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.guisubmenu =
+    
+    ## The name of a submenu in a GUI
+    element guisubmenu {
+      db.guisubmenu.attlist,
+      (db._text | db.accel | db.superscript | db.subscript)*
+    }
+}
+div {
+  db.menuchoice.role.attribute = attribute role { text }
+  db.menuchoice.attlist =
+    db.menuchoice.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.menuchoice =
+    
+    ## A selection or series of selections from a menu
+    element menuchoice {
+      db.menuchoice.attlist,
+      db.shortcut?,
+      (db.guibutton
+       | db.guiicon
+       | db.guilabel
+       | db.guimenu
+       | db.guimenuitem
+       | db.guisubmenu)+
+    }
+}
+div {
+  db.mousebutton.role.attribute = attribute role { text }
+  db.mousebutton.attlist =
+    db.mousebutton.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.mousebutton =
+    
+    ## The conventional name of a mouse button
+    element mousebutton { db.mousebutton.attlist, db._text }
+}
+db.keyboard.inlines =
+  db.keycombo
+  | db.keycap
+  | db.keycode
+  | db.keysym
+  | db.shortcut
+  | db.accel
+div {
+  db.keycap.function.enumeration =
+    
+    ## The "Alt" key
+    "alt"
+    | 
+      ## The "Backspace" key
+      "backspace"
+    | 
+      ## The "Command" key
+      "command"
+    | 
+      ## The "Control" key
+      "control"
+    | 
+      ## The "Delete" key
+      "delete"
+    | 
+      ## The down arrow
+      "down"
+    | 
+      ## The "End" key
+      "end"
+    | 
+      ## The "Enter" or "Return" key
+      "enter"
+    | 
+      ## The "Escape" key
+      "escape"
+    | 
+      ## The "Home" key
+      "home"
+    | 
+      ## The "Insert" key
+      "insert"
+    | 
+      ## The left arrow
+      "left"
+    | 
+      ## The "Meta" key
+      "meta"
+    | 
+      ## The "Option" key
+      "option"
+    | 
+      ## The page down key
+      "pagedown"
+    | 
+      ## The page up key
+      "pageup"
+    | 
+      ## The right arrow
+      "right"
+    | 
+      ## The "Shift" key
+      "shift"
+    | 
+      ## The spacebar
+      "space"
+    | 
+      ## The "Tab" key
+      "tab"
+    | 
+      ## The up arrow
+      "up"
+  db.keycap.function-enum.attribute =
+    
+    ## Identifies the function key
+    attribute function { db.keycap.function.enumeration }?
+  db.keycap.function-other.attributes =
+    
+    ## Identifies the function key
+    attribute function {
+      
+      ## Indicates a non-standard function key
+      "other"
+    }?,
+    
+    ## Specifies a keyword that identifies the non-standard key
+    attribute otherfunction { text }
+  db.keycap.function.attrib =
+    db.keycap.function-enum.attribute
+    | db.keycap.function-other.attributes
+  db.keycap.role.attribute = attribute role { text }
+  db.keycap.attlist =
+    db.keycap.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.keycap.function.attrib
+  db.keycap =
+    
+    ## The text printed on a key on a keyboard
+    element keycap { db.keycap.attlist, db._text }
+}
+div {
+  db.keycode.role.attribute = attribute role { text }
+  db.keycode.attlist =
+    db.keycode.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.keycode =
+    
+    ## The internal, frequently numeric, identifier for a key on a keyboard
+    element keycode { db.keycode.attlist, db._text }
+}
+db.keycombination.contentmodel =
+  (db.keycap | db.keycombo | db.keysym) | db.mousebutton
+div {
+  db.keycombo.action.enumeration =
+    
+    ## A (single) mouse click.
+    "click"
+    | 
+      ## A double mouse click.
+      "double-click"
+    | 
+      ## A mouse or key press.
+      "press"
+    | 
+      ## Sequential clicks or presses.
+      "seq"
+    | 
+      ## Simultaneous clicks or presses.
+      "simul"
+  db.keycombo.action-enum.attribute =
+    
+    ## Identifies the nature of the action taken. If keycombo
+    ##  contains more than one element, simul
+    ##  is the default, otherwise there is no default.
+    attribute action { db.keycombo.action.enumeration }?
+  db.keycombo.action-other.attributes =
+    
+    ## Identifies the nature of the action taken
+    attribute action {
+      
+      ## Indicates a non-standard action
+      "other"
+    }?,
+    
+    ## Identifies the non-standard action in some unspecified way.
+    attribute otheraction { text }
+  db.keycombo.action.attrib =
+    db.keycombo.action-enum.attribute
+    | db.keycombo.action-other.attributes
+  db.keycombo.role.attribute = attribute role { text }
+  db.keycombo.attlist =
+    db.keycombo.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.keycombo.action.attrib
+  db.keycombo =
+    
+    ## A combination of input actions
+    element keycombo {
+      db.keycombo.attlist, db.keycombination.contentmodel+
+    }
+}
+div {
+  db.keysym.role.attribute = attribute role { text }
+  db.keysym.attlist =
+    db.keysym.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.keysym =
+    
+    ## The symbolic name of a key on a keyboard
+    element keysym { db.keysym.attlist, db._text }
+}
+div {
+  db.accel.role.attribute = attribute role { text }
+  db.accel.attlist =
+    db.accel.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.accel =
+    
+    ## A graphical user interface (GUI) keyboard shortcut
+    element accel { db.accel.attlist, db._text }
+}
+div {
+  db.shortcut.action.attrib = db.keycombo.action.attrib
+  db.shortcut.role.attribute = attribute role { text }
+  db.shortcut.attlist =
+    db.shortcut.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.shortcut.action.attrib
+  db.shortcut =
+    
+    ## A key combination for an action that is also accessible through a menu
+    element shortcut {
+      db.shortcut.attlist, db.keycombination.contentmodel+
+    }
+}
+db.os.inlines =
+  db.prompt
+  | db.envar
+  | db.filename
+  | db.command
+  | db.computeroutput
+  | db.userinput
+db.computeroutput.inlines =
+  (text | db.ubiq.inlines | db.os.inlines | db.technical.inlines)
+  | db.co
+  | db.markup.inlines
+db.userinput.inlines =
+  (text | db.ubiq.inlines | db.os.inlines | db.technical.inlines)
+  | db.co
+  | db.markup.inlines
+  | db.gui.inlines
+  | db.keyboard.inlines
+db.prompt.inlines = db._text | db.co
+div {
+  db.prompt.role.attribute = attribute role { text }
+  db.prompt.attlist =
+    db.prompt.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.prompt =
+    
+    ## A character or string indicating the start of an input field in a  computer display
+    element prompt { db.prompt.attlist, db.prompt.inlines* }
+}
+div {
+  db.envar.role.attribute = attribute role { text }
+  db.envar.attlist =
+    db.envar.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.envar =
+    
+    ## A software environment variable
+    element envar { db.envar.attlist, db._text }
+}
+div {
+  db.filename.class.enumeration =
+    
+    ## A device
+    "devicefile"
+    | 
+      ## A directory
+      "directory"
+    | 
+      ## A filename extension
+      "extension"
+    | 
+      ## A header file (as for a programming language)
+      "headerfile"
+    | 
+      ## A library file
+      "libraryfile"
+    | 
+      ## A partition (as of a hard disk)
+      "partition"
+    | 
+      ## A symbolic link
+      "symlink"
+  db.filename.class.attribute =
+    
+    ## Identifies the class of filename
+    attribute class { db.filename.class.enumeration }
+  db.filename.path.attribute =
+    
+    ## Specifies the path of the filename
+    attribute path { text }
+  db.filename.role.attribute = attribute role { text }
+  db.filename.attlist =
+    db.filename.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.filename.path.attribute?
+    & db.filename.class.attribute?
+  db.filename =
+    
+    ## The name of a file
+    element filename { db.filename.attlist, db._text }
+}
+div {
+  db.command.role.attribute = attribute role { text }
+  db.command.attlist =
+    db.command.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.command =
+    
+    ## The name of an executable program or other software command
+    element command { db.command.attlist, db._text }
+}
+div {
+  db.computeroutput.role.attribute = attribute role { text }
+  db.computeroutput.attlist =
+    db.computeroutput.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.computeroutput =
+    
+    ## Data, generally text, displayed or presented by a computer
+    element computeroutput {
+      db.computeroutput.attlist, db.computeroutput.inlines*
+    }
+}
+div {
+  db.userinput.role.attribute = attribute role { text }
+  db.userinput.attlist =
+    db.userinput.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.userinput =
+    
+    ## Data entered by the user
+    element userinput { db.userinput.attlist, db.userinput.inlines* }
+}
+div {
+  db.cmdsynopsis.role.attribute = attribute role { text }
+  db.cmdsynopsis.sepchar.attribute =
+    
+    ## Specifies the character that should separate the command and its top-level arguments
+    attribute sepchar { text }
+  db.cmdsynopsis.cmdlength.attribute =
+    
+    ## Indicates the displayed length of the command; this information may be used to intelligently indent command synopses which extend beyond one line
+    attribute cmdlength { text }
+  db.cmdsynopsis.label.attribute = db.label.attribute
+  db.cmdsynopsis.attlist =
+    db.cmdsynopsis.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.cmdsynopsis.sepchar.attribute?
+    & db.cmdsynopsis.cmdlength.attribute?
+    & db.cmdsynopsis.label.attribute?
+  db.cmdsynopsis.info = db._info.title.forbidden
+  db.cmdsynopsis =
+    
+    ## A syntax summary for a software command
+    element cmdsynopsis {
+      db.cmdsynopsis.attlist,
+      db.cmdsynopsis.info,
+      (db.command | db.arg | db.group | db.sbr)+,
+      db.synopfragment*
+    }
+}
+db.rep.enumeration =
+  
+  ## Can not be repeated.
+  "norepeat"
+  | 
+    ## Can be repeated.
+    "repeat"
+db.rep.attribute =
+  
+  ## Indicates whether or not repetition is possible.
+  [ a:defaultValue = "norepeat" ] attribute rep { db.rep.enumeration }
+db.choice.enumeration =
+  
+  ## Formatted to indicate that it is optional.
+  "opt"
+  | 
+    ## Formatted without indication.
+    "plain"
+  | 
+    ## Formatted to indicate that it is required.
+    "req"
+db.choice.opt.attribute =
+  
+  ## Indicates optionality.
+  [ a:defaultValue = "opt" ] attribute choice { db.choice.enumeration }
+db.choice.req.attribute =
+  
+  ## Indicates optionality.
+  [ a:defaultValue = "req" ] attribute choice { db.choice.enumeration }
+div {
+  db.arg.role.attribute = attribute role { text }
+  db.arg.rep.attribute = db.rep.attribute
+  db.arg.choice.attribute = db.choice.opt.attribute
+  db.arg.attlist =
+    db.arg.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.arg.rep.attribute?
+    & db.arg.choice.attribute?
+  db.arg =
+    
+    ## An argument in a cmdsynopsis
+    element arg {
+      db.arg.attlist,
+      (db._text
+       | db.arg
+       | db.group
+       | db.option
+       | db.synopfragmentref
+       | db.sbr)*
+    }
+}
+div {
+  db.group.role.attribute = attribute role { text }
+  db.group.rep.attribute = db.rep.attribute
+  db.group.choice.attribute = db.choice.opt.attribute
+  db.group.attlist =
+    db.group.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.group.rep.attribute?
+    & db.group.choice.attribute?
+  db.group =
+    
+    ## A group of elements in a cmdsynopsis
+    element group {
+      db.group.attlist,
+      (db.arg
+       | db.group
+       | db.option
+       | db.synopfragmentref
+       | db.replaceable
+       | db.sbr)+
+    }
+}
+div {
+  db.sbr.role.attribute = attribute role { text }
+  db.sbr.attlist = db.sbr.role.attribute? & db.common.attributes
+  db.sbr =
+    
+    ## An explicit line break in a command synopsis
+    element sbr { db.sbr.attlist, empty }
+}
+div {
+  db.synopfragment.role.attribute = attribute role { text }
+  db.synopfragment.attlist =
+    db.synopfragment.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.synopfragment =
+    
+    ## A portion of a cmdsynopsis broken out from the main body of the synopsis
+    element synopfragment {
+      db.synopfragment.attlist, (db.arg | db.group)+
+    }
+}
+div {
+  db.synopfragmentref.role.attribute = attribute role { text }
+  db.synopfragmentref.attlist =
+    db.synopfragmentref.role.attribute?
+    & db.common.attributes
+    & db.linkend.attribute
+  db.synopfragmentref =
+    
+    ## A reference to a fragment of a command synopsis
+    [
+      s:pattern [
+        name = "Synopsis fragment type constraint"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:synopfragmentref"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test =
+              "local-name(//*[@xml:id=current()/@linkend]) = 'synopfragment' and namespace-uri(//*[@xml:id=current()/@linkend]) = 'http://docbook.org/ns/docbook'"
+            "@linkend on synopfragmentref must point to a synopfragment."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element synopfragmentref { db.synopfragmentref.attlist, text }
+}
+db.programming.inlines =
+  db.function
+  | db.parameter
+  | db.varname
+  | db.returnvalue
+  | db.type
+  | db.classname
+  | db.exceptionname
+  | db.interfacename
+  | db.methodname
+  | db.modifier
+  | db.initializer
+  | db.oo.inlines
+db.oo.inlines = db.ooclass | db.ooexception | db.oointerface
+db.synopsis.blocks =
+  (db.funcsynopsis
+   | db.classsynopsis
+   | db.methodsynopsis
+   | db.constructorsynopsis
+   | db.destructorsynopsis
+   | db.fieldsynopsis)
+  | db.cmdsynopsis
+div {
+  db.synopsis.role.attribute = attribute role { text }
+  db.synopsis.label.attribute = db.label.attribute
+  db.synopsis.attlist =
+    db.synopsis.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.verbatim.attributes
+    & db.synopsis.label.attribute?
+  db.synopsis =
+    
+    ## A general-purpose element for representing the syntax of commands or functions
+    element synopsis { db.synopsis.attlist, db.verbatim.contentmodel }
+}
+div {
+  db.funcsynopsis.role.attribute = attribute role { text }
+  db.funcsynopsis.attlist =
+    db.funcsynopsis.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.language.attribute?
+  db.funcsynopsis.info = db._info.title.forbidden
+  db.funcsynopsis =
+    
+    ## The syntax summary for a function definition
+    element funcsynopsis {
+      db.funcsynopsis.attlist,
+      db.funcsynopsis.info,
+      (db.funcsynopsisinfo | db.funcprototype)+
+    }
+}
+div {
+  db.funcsynopsisinfo.role.attribute = attribute role { text }
+  db.funcsynopsisinfo.attlist =
+    db.funcsynopsisinfo.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.verbatim.attributes
+  db.funcsynopsisinfo =
+    
+    ## Information supplementing the funcdefs of a funcsynopsis
+    element funcsynopsisinfo {
+      db.funcsynopsisinfo.attlist, db.verbatim.contentmodel
+    }
+}
+div {
+  db.funcprototype.role.attribute = attribute role { text }
+  db.funcprototype.attlist =
+    db.funcprototype.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.funcprototype =
+    
+    ## The prototype of a function
+    element funcprototype {
+      db.funcprototype.attlist,
+      db.modifier*,
+      db.funcdef,
+      (db.void
+       | db.varargs
+       | ((db.paramdef | db.group.paramdef)+, db.varargs?)),
+      db.modifier*
+    }
+}
+div {
+  db.funcdef.role.attribute = attribute role { text }
+  db.funcdef.attlist =
+    db.funcdef.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.funcdef =
+    
+    ## A function (subroutine) name and its return type
+    element funcdef {
+      db.funcdef.attlist, (db._text | db.type | db.function)*
+    }
+}
+div {
+  db.function.role.attribute = attribute role { text }
+  db.function.attlist =
+    db.function.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.function =
+    
+    ## The name of a function or subroutine, as in a programming language
+    element function { db.function.attlist, db._text }
+}
+div {
+  db.void.role.attribute = attribute role { text }
+  db.void.attlist =
+    db.void.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.void =
+    
+    ## An empty element in a function synopsis indicating that the function in question takes no arguments
+    element void { db.void.attlist, empty }
+}
+div {
+  db.varargs.role.attribute = attribute role { text }
+  db.varargs.attlist =
+    db.varargs.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.varargs =
+    
+    ## An empty element in a function synopsis indicating a variable number of arguments
+    element varargs { db.varargs.attlist, empty }
+}
+div {
+  db.group.paramdef.role.attribute = attribute role { text }
+  db.group.paramdef.choice.attribute = db.choice.opt.attribute
+  db.group.paramdef.attlist =
+    db.group.paramdef.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.group.paramdef.choice.attribute?
+  db.group.paramdef =
+    
+    ## A group of parameters
+    element group {
+      db.group.paramdef.attlist, (db.paramdef | db.group.paramdef)+
+    }
+}
+div {
+  db.paramdef.role.attribute = attribute role { text }
+  db.paramdef.choice.enumeration =
+    
+    ## Formatted to indicate that it is optional.
+    "opt"
+    | 
+      ## Formatted to indicate that it is required.
+      "req"
+  db.paramdef.choice.attribute =
+    
+    ## Indicates optionality.
+    [ a:defaultValue = "opt" ]
+    attribute choice { db.paramdef.choice.enumeration }
+  db.paramdef.attlist =
+    db.paramdef.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.paramdef.choice.attribute?
+  db.paramdef =
+    
+    ## Information about a function parameter in a programming language
+    element paramdef {
+      db.paramdef.attlist,
+      (db._text
+       | db.initializer
+       | db.type
+       | db.parameter
+       | db.funcparams)*
+    }
+}
+div {
+  db.funcparams.role.attribute = attribute role { text }
+  db.funcparams.attlist =
+    db.funcparams.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.funcparams =
+    
+    ## Parameters for a function referenced through a function pointer in a synopsis
+    element funcparams { db.funcparams.attlist, db._text }
+}
+div {
+  db.classsynopsis.role.attribute = attribute role { text }
+  db.classsynopsis.class.enumeration =
+    
+    ## This is the synopsis of a class
+    "class"
+    | 
+      ## This is the synopsis of an interface
+      "interface"
+  db.classsynopsis.class.attribute =
+    
+    ## Specifies the nature of the synopsis
+    attribute class { db.classsynopsis.class.enumeration }
+  db.classsynopsis.attlist =
+    db.classsynopsis.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.language.attribute?
+    & db.classsynopsis.class.attribute?
+  db.classsynopsis =
+    
+    ## The syntax summary for a class definition
+    element classsynopsis {
+      db.classsynopsis.attlist,
+      db.oo.inlines+,
+      (db.classsynopsisinfo
+       | db.methodsynopsis
+       | db.constructorsynopsis
+       | db.destructorsynopsis
+       | db.fieldsynopsis)*
+    }
+}
+div {
+  db.classsynopsisinfo.role.attribute = attribute role { text }
+  db.classsynopsisinfo.attlist =
+    db.classsynopsisinfo.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.verbatim.attributes
+  db.classsynopsisinfo =
+    
+    ## Information supplementing the contents of a classsynopsis
+    element classsynopsisinfo {
+      db.classsynopsisinfo.attlist, db.verbatim.contentmodel
+    }
+}
+div {
+  db.ooclass.role.attribute = attribute role { text }
+  db.ooclass.attlist =
+    db.ooclass.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.ooclass =
+    
+    ## A class in an object-oriented programming language
+    element ooclass {
+      db.ooclass.attlist, (db.package | db.modifier)*, db.classname
+    }
+}
+div {
+  db.oointerface.role.attribute = attribute role { text }
+  db.oointerface.attlist =
+    db.oointerface.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.oointerface =
+    
+    ## An interface in an object-oriented programming language
+    element oointerface {
+      db.oointerface.attlist,
+      (db.package | db.modifier)*,
+      db.interfacename
+    }
+}
+div {
+  db.ooexception.role.attribute = attribute role { text }
+  db.ooexception.attlist =
+    db.ooexception.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.ooexception =
+    
+    ## An exception in an object-oriented programming language
+    element ooexception {
+      db.ooexception.attlist,
+      (db.package | db.modifier)*,
+      db.exceptionname
+    }
+}
+db.modifier.xml.space.attribute =
+  
+  ## Can be used to indicate that whitespace in the modifier should be preserved (for multi-line annotations, for example).
+  attribute xml:space {
+    
+    ## Extra whitespace and line breaks must be preserved.
+    [
+      # Ideally the definition of xml:space used on modifier would be
+      # different from the definition used on the verbatim elements. The
+      # verbatim elements forbid the use of xml:space="default" which
+      # wouldn't be a problem on modifier. But doing that causes the
+      # generated XSD schemas to be broken so I'm just reusing the existing
+      # definition for now. It won't be backwards incompatible to fix this
+      # problem in the future.
+      #    | ## Extra whitespace and line breaks are not preserved.
+      #      "default"
+      
+    ]
+    "preserve"
+  }
+div {
+  db.modifier.role.attribute = attribute role { text }
+  db.modifier.attlist =
+    db.modifier.xml.space.attribute?
+    & db.modifier.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.modifier =
+    
+    ## Modifiers in a synopsis
+    element modifier { db.modifier.attlist, db._text }
+}
+div {
+  db.interfacename.role.attribute = attribute role { text }
+  db.interfacename.attlist =
+    db.interfacename.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.interfacename =
+    
+    ## The name of an interface
+    element interfacename { db.interfacename.attlist, db._text }
+}
+div {
+  db.exceptionname.role.attribute = attribute role { text }
+  db.exceptionname.attlist =
+    db.exceptionname.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.exceptionname =
+    
+    ## The name of an exception
+    element exceptionname { db.exceptionname.attlist, db._text }
+}
+div {
+  db.fieldsynopsis.role.attribute = attribute role { text }
+  db.fieldsynopsis.attlist =
+    db.fieldsynopsis.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.language.attribute?
+  db.fieldsynopsis =
+    
+    ## The name of a field in a class definition
+    element fieldsynopsis {
+      db.fieldsynopsis.attlist,
+      db.modifier*,
+      db.type?,
+      db.varname,
+      db.initializer?
+    }
+}
+div {
+  db.initializer.role.attribute = attribute role { text }
+  db.initializer.attlist =
+    db.initializer.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.initializer.inlines = db._text | db.mathphrase | db.markup.inlines
+  db.initializer =
+    
+    ## The initializer for a fieldsynopsis
+    element initializer {
+      db.initializer.attlist, db.initializer.inlines*
+    }
+}
+div {
+  db.constructorsynopsis.role.attribute = attribute role { text }
+  db.constructorsynopsis.attlist =
+    db.constructorsynopsis.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.language.attribute?
+  db.constructorsynopsis =
+    
+    ## A syntax summary for a constructor
+    element constructorsynopsis {
+      db.constructorsynopsis.attlist,
+      db.modifier*,
+      db.methodname?,
+      ((db.methodparam | db.group.methodparam)+ | db.void?),
+      db.exceptionname*
+    }
+}
+div {
+  db.destructorsynopsis.role.attribute = attribute role { text }
+  db.destructorsynopsis.attlist =
+    db.destructorsynopsis.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.language.attribute?
+  db.destructorsynopsis =
+    
+    ## A syntax summary for a destructor
+    element destructorsynopsis {
+      db.destructorsynopsis.attlist,
+      db.modifier*,
+      db.methodname?,
+      ((db.methodparam | db.group.methodparam)+ | db.void?),
+      db.exceptionname*
+    }
+}
+div {
+  db.methodsynopsis.role.attribute = attribute role { text }
+  db.methodsynopsis.attlist =
+    db.methodsynopsis.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.language.attribute?
+  db.methodsynopsis =
+    
+    ## A syntax summary for a method
+    element methodsynopsis {
+      db.methodsynopsis.attlist,
+      db.modifier*,
+      (db.type | db.void)?,
+      db.methodname,
+      ((db.methodparam | db.group.methodparam)+ | db.void),
+      db.exceptionname*,
+      db.modifier*
+    }
+}
+div {
+  db.methodname.role.attribute = attribute role { text }
+  db.methodname.attlist =
+    db.methodname.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.methodname =
+    
+    ## The name of a method
+    element methodname { db.methodname.attlist, db._text }
+}
+div {
+  db.methodparam.role.attribute = attribute role { text }
+  db.methodparam.rep.attribute = db.rep.attribute
+  db.methodparam.choice.attribute = db.choice.req.attribute
+  db.methodparam.attlist =
+    db.methodparam.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.methodparam.rep.attribute?
+    & db.methodparam.choice.attribute?
+  db.methodparam =
+    
+    ## Parameters to a method
+    element methodparam {
+      db.methodparam.attlist,
+      db.modifier*,
+      db.type?,
+      ((db.modifier*, db.parameter, db.initializer?) | db.funcparams),
+      db.modifier*
+    }
+}
+div {
+  db.group.methodparam.role.attribute = attribute role { text }
+  db.group.methodparam.choice.attribute = db.choice.opt.attribute
+  db.group.methodparam.attlist =
+    db.group.methodparam.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.group.methodparam.choice.attribute?
+  db.group.methodparam =
+    
+    ## A group of method parameters
+    element group {
+      db.group.methodparam.attlist,
+      (db.methodparam | db.group.methodparam)+
+    }
+}
+div {
+  db.varname.role.attribute = attribute role { text }
+  db.varname.attlist =
+    db.varname.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.varname =
+    
+    ## The name of a variable
+    element varname { db.varname.attlist, db._text }
+}
+div {
+  db.returnvalue.role.attribute = attribute role { text }
+  db.returnvalue.attlist =
+    db.returnvalue.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.returnvalue =
+    
+    ## The value returned by a function
+    element returnvalue { db.returnvalue.attlist, db._text }
+}
+div {
+  db.type.role.attribute = attribute role { text }
+  db.type.attlist =
+    db.type.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.type =
+    
+    ## The classification of a value
+    element type { db.type.attlist, db._text }
+}
+div {
+  db.classname.role.attribute = attribute role { text }
+  db.classname.attlist =
+    db.classname.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.classname =
+    
+    ## The name of a class, in the object-oriented programming sense
+    element classname { db.classname.attlist, db._text }
+}
+div {
+  db.programlisting.role.attribute = attribute role { text }
+  db.programlisting.width.attribute = db.width.characters.attribute
+  db.programlisting.attlist =
+    db.programlisting.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.verbatim.attributes
+    & db.programlisting.width.attribute?
+  db.programlisting =
+    
+    ## A literal listing of all or part of a program
+    element programlisting {
+      db.programlisting.attlist, db.verbatim.contentmodel
+    }
+}
+db.admonition.blocks =
+  db.caution | db.important | db.note | db.tip | db.warning
+db.admonition.contentmodel = db._info.title.only, db.all.blocks+
+div {
+  db.caution.role.attribute = attribute role { text }
+  db.caution.attlist =
+    db.caution.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.caution =
+    
+    ## A note of caution
+    [
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:caution"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:caution)"
+            "caution must not occur among the children or descendants of caution"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:caution"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:important)"
+            "important must not occur among the children or descendants of caution"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:caution"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:note)"
+            "note must not occur among the children or descendants of caution"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:caution"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:tip)"
+            "tip must not occur among the children or descendants of caution"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:caution"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:warning)"
+            "warning must not occur among the children or descendants of caution"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element caution { db.caution.attlist, db.admonition.contentmodel }
+}
+div {
+  db.important.role.attribute = attribute role { text }
+  db.important.attlist =
+    db.important.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.important =
+    
+    ## An admonition set off from the text
+    [
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:important"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:caution)"
+            "caution must not occur among the children or descendants of important"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:important"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:important)"
+            "important must not occur among the children or descendants of important"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:important"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:note)"
+            "note must not occur among the children or descendants of important"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:important"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:tip)"
+            "tip must not occur among the children or descendants of important"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:important"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:warning)"
+            "warning must not occur among the children or descendants of important"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element important {
+      db.important.attlist, db.admonition.contentmodel
+    }
+}
+div {
+  db.note.role.attribute = attribute role { text }
+  db.note.attlist =
+    db.note.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.note =
+    
+    ## A message set off from the text
+    [
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:note"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:caution)"
+            "caution must not occur among the children or descendants of note"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:note"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:important)"
+            "important must not occur among the children or descendants of note"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:note"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:note)"
+            "note must not occur among the children or descendants of note"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:note"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:tip)"
+            "tip must not occur among the children or descendants of note"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:note"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:warning)"
+            "warning must not occur among the children or descendants of note"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element note { db.note.attlist, db.admonition.contentmodel }
+}
+div {
+  db.tip.role.attribute = attribute role { text }
+  db.tip.attlist =
+    db.tip.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.tip =
+    
+    ## A suggestion to the user, set off from the text
+    [
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:tip"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:caution)"
+            "caution must not occur among the children or descendants of tip"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:tip"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:important)"
+            "important must not occur among the children or descendants of tip"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:tip"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:note)"
+            "note must not occur among the children or descendants of tip"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:tip"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:tip)"
+            "tip must not occur among the children or descendants of tip"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:tip"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:warning)"
+            "warning must not occur among the children or descendants of tip"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element tip { db.tip.attlist, db.admonition.contentmodel }
+}
+div {
+  db.warning.role.attribute = attribute role { text }
+  db.warning.attlist =
+    db.warning.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.warning =
+    
+    ## An admonition set off from the text
+    [
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:warning"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:caution)"
+            "caution must not occur among the children or descendants of warning"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:warning"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:important)"
+            "important must not occur among the children or descendants of warning"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:warning"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:note)"
+            "note must not occur among the children or descendants of warning"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:warning"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:tip)"
+            "tip must not occur among the children or descendants of warning"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:warning"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:warning)"
+            "warning must not occur among the children or descendants of warning"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element warning { db.warning.attlist, db.admonition.contentmodel }
+}
+db.error.inlines =
+  db.errorcode | db.errortext | db.errorname | db.errortype
+div {
+  db.errorcode.role.attribute = attribute role { text }
+  db.errorcode.attlist =
+    db.errorcode.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.errorcode =
+    
+    ## An error code
+    element errorcode { db.errorcode.attlist, db._text }
+}
+div {
+  db.errorname.role.attribute = attribute role { text }
+  db.errorname.attlist =
+    db.errorname.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.errorname =
+    
+    ## An error name
+    element errorname { db.errorname.attlist, db._text }
+}
+div {
+  db.errortext.role.attribute = attribute role { text }
+  db.errortext.attlist =
+    db.errortext.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.errortext =
+    
+    ## An error message.
+    element errortext { db.errortext.attlist, db._text }
+}
+div {
+  db.errortype.role.attribute = attribute role { text }
+  db.errortype.attlist =
+    db.errortype.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.errortype =
+    
+    ## The classification of an error message
+    element errortype { db.errortype.attlist, db._text }
+}
+db.systemitem.inlines = db._text | db.co
+div {
+  db.systemitem.class.enumeration =
+    
+    ## A daemon or other system process (syslogd)
+    "daemon"
+    | 
+      ## A domain name (example.com)
+      "domainname"
+    | 
+      ## An ethernet address (00:05:4E:49:FD:8E)
+      "etheraddress"
+    | 
+      ## An event of some sort (SIGHUP)
+      "event"
+    | 
+      ## An event handler of some sort (hangup)
+      "eventhandler"
+    | 
+      ## A filesystem (ext3)
+      "filesystem"
+    | 
+      ## A fully qualified domain name (my.example.com)
+      "fqdomainname"
+    | 
+      ## A group name (wheel)
+      "groupname"
+    | 
+      ## An IP address (127.0.0.1)
+      "ipaddress"
+    | 
+      ## A library (libncurses)
+      "library"
+    | 
+      ## A macro
+      "macro"
+    | 
+      ## A netmask (255.255.255.192)
+      "netmask"
+    | 
+      ## A newsgroup (comp.text.xml)
+      "newsgroup"
+    | 
+      ## An operating system name (Hurd)
+      "osname"
+    | 
+      ## A process (gnome-cups-icon)
+      "process"
+    | 
+      ## A protocol (ftp)
+      "protocol"
+    | 
+      ## A resource
+      "resource"
+    | 
+      ## A security context (a role, permission, or security token, for example)
+      "securitycontext"
+    | 
+      ## A server (mail.example.com)
+      "server"
+    | 
+      ## A service (ppp)
+      "service"
+    | 
+      ## A system name (hephaistos)
+      "systemname"
+    | 
+      ## A user name (ndw)
+      "username"
+  db.systemitem.class-enum.attribute =
+    
+    ## Identifies the nature of the system item
+    attribute class { db.systemitem.class.enumeration }?
+  db.systemitem.class-other.attribute =
+    
+    ## Identifies the nature of the non-standard system item
+    attribute otherclass { xsd:NMTOKEN }
+  db.systemitem.class-other.attributes =
+    
+    ## Identifies the kind of systemitemgraphic identifier
+    attribute class {
+      
+      ## Indicates that the system item is some 'other' kind.
+      "other"
+    }
+    & db.systemitem.class-other.attribute
+  db.systemitem.class.attribute =
+    db.systemitem.class-enum.attribute
+    | db.systemitem.class-other.attributes
+  db.systemitem.role.attribute = attribute role { text }
+  db.systemitem.attlist =
+    db.systemitem.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.systemitem.class.attribute?
+  db.systemitem =
+    
+    ## A system-related item or term
+    element systemitem { db.systemitem.attlist, db.systemitem.inlines* }
+}
+div {
+  db.option.role.attribute = attribute role { text }
+  db.option.attlist =
+    db.option.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.option =
+    
+    ## An option for a software command
+    element option { db.option.attlist, db._text }
+}
+div {
+  db.optional.role.attribute = attribute role { text }
+  db.optional.attlist =
+    db.optional.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.optional =
+    
+    ## Optional information
+    element optional { db.optional.attlist, db._text }
+}
+div {
+  db.property.role.attribute = attribute role { text }
+  db.property.attlist =
+    db.property.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.property =
+    
+    ## A unit of data associated with some part of a computer system
+    element property { db.property.attlist, db._text }
+}
+div {
+  db.topic.status.attribute = db.status.attribute
+  db.topic.role.attribute = attribute role { text }
+  db.topic.type.attribute =
+    
+    ## Identifies the topic type
+    attribute type { text }
+  db.topic.attlist =
+    db.topic.role.attribute?
+    & db.topic.type.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.label.attribute?
+    & db.topic.status.attribute?
+  db.topic.info = db._info.title.req
+  db.topic =
+    
+    ## A modular unit of documentation not part of any particular narrative flow
+    element topic {
+      db.topic.attlist,
+      db.topic.info,
+      db.navigation.components*,
+      db.toplevel.blocks.or.sections,
+      db.navigation.components*
+    }
+}
+start =
+  db.assembly
+  | db.resources
+  | db.relationships
+  | db.transforms
+  | db.module
+db.grammar.attribute =
+  
+  ## Identifies the markup grammar of a resource
+  attribute grammar { text }
+div {
+  db.assembly.role.attribute = attribute role { text }
+  db.assembly.attlist =
+    db.assembly.role.attribute? & db.common.attributes
+  db.assembly.info = db._info
+  db.assembly =
+    
+    ## Defines the hierarchy and relationships for a collection of resources
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:assembly"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element assembly {
+      db.assembly.attlist,
+      db.assembly.info,
+      db.resources+,
+      db.structure*,
+      db.relationships*,
+      db.transforms?
+    }
+}
+div {
+  db.resources.role.attribute = attribute role { text }
+  db.resources.grammar.attribute = db.grammar.attribute
+  db.resources.attlist =
+    db.resources.role.attribute?
+    & db.resources.grammar.attribute?
+    & db.common.attributes
+  db.resources.info = db._info.title.forbidden
+  db.resources =
+    
+    ## Contains one or more resource objects that are managed by the assembly
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:resources"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element resources {
+      db.resources.attlist,
+      db.resources.info?,
+      (db.description*, db.resource+)
+    }
+}
+div {
+  db.resource.role.attribute = attribute role { text }
+  db.resource.fileref.attribute =
+    
+    ## Indentifies the location of the data by URI
+    attribute fileref { xsd:anyURI }
+  db.resource.grammar.attribute = db.grammar.attribute
+  db.resource.attlist =
+    db.resource.role.attribute?
+    & db.resource.grammar.attribute?
+    & db.common.attributes
+  db.resource =
+    
+    ## Identifies an object managed within the assembly
+    element resource {
+      db.resource.attlist,
+      db.resource.fileref.attribute,
+      db.description*
+    }
+}
+div {
+  db.structure.role.attribute = attribute role { text }
+  db.structure.type.attribute =
+    
+    ## Identifies the structure type of the structure
+    attribute type { xsd:NMTOKEN }
+  db.structure.resourceref.attribute =
+    
+    ## Indicates a single resource from which to construct this structure
+    attribute resourceref { xsd:IDREF }
+  db.structure.defaultformat.attribute =
+    
+    ## Identifies the default format of the structure
+    attribute defaultformat { xsd:NMTOKEN }
+  db.structure.renderas.attribute =
+    
+    ## Specifies the DocBook element to which this unit should be renamed
+    attribute renderas { xsd:QName }
+  db.structure.attlist =
+    db.structure.role.attribute?
+    & db.structure.type.attribute?
+    & db.structure.resourceref.attribute?
+    & db.structure.renderas.attribute?
+    & db.structure.defaultformat.attribute?
+    & db.common.attributes
+  db.structure.info = db.info?
+  db.structure =
+    
+    ## Describes the structure of a document
+    [
+      s:pattern [
+        name = "Specification of renderas"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:structure"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@renderas and db:output/@renderas"
+            "The renderas attribute can be specified on either the structure or output, but not both."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element structure {
+      db.structure.attlist,
+      (db.output* & db.filterin? & db.filterout? & db.structure.info),
+      db.merge?,
+      db.revhistory?,
+      db.module+
+    }
+}
+div {
+  db.output.role.attribute = attribute role { text }
+  db.output.chunk.attribute =
+    
+    ## Specifies chunking for this module
+    [ a:defaultValue = "auto" ]
+    attribute chunk { db.module.chunk.enumeration }
+  db.output.format.attribute =
+    
+    ## Identifies the format of the module or structure
+    attribute format { xsd:NMTOKENS }
+  db.output.file.attribute =
+    
+    ## Specifies the output file for this module or structure
+    attribute file { xsd:anyURI }
+  db.output.renderas.attribute =
+    
+    ## Specifies the DocBook element to which this unit should be renamed
+    attribute renderas { xsd:QName }
+  db.output.grammar.attribute = db.grammar.attribute
+  db.output.transform.attribute =
+    
+    ## Specifies the transformation that should be applied to this unit
+    attribute transform { xsd:NMTOKEN }
+  db.output.suppress.attribute =
+    
+    ## Indicates whether or not this unit should be suppressed
+    attribute suppress { xsd:boolean }
+  db.output.attlist =
+    db.output.role.attribute?
+    & db.common.attributes
+    & db.output.chunk.attribute?
+    & db.output.format.attribute?
+    & db.output.file.attribute?
+    & db.output.renderas.attribute?
+    & db.output.grammar.attribute?
+    & db.output.transform.attribute?
+    & db.output.suppress.attribute?
+  db.output =
+    
+    ## Specify an output format and/or file name and/or renderas
+    element output { db.output.attlist, empty }
+}
+div {
+  db.merge.role.attribute = attribute role { text }
+  db.merge.resourceref.attribute =
+    
+    ## Indicates a single resource from which to read merged info
+    attribute resourceref { xsd:IDREF }
+  db.merge.attlist =
+    db.merge.role.attribute?
+    & db.merge.resourceref.attribute?
+    & db.common.attributes
+  db.merge =
+    
+    ## A wrapper for information that a module overrides in the resource it includes
+    element merge { db.merge.attlist, (db._title & db.info.elements*) }
+}
+div {
+  db.module.role.attribute = attribute role { text }
+  db.module.chunk.enumeration =
+    
+    ## This module will be in a chunk
+    "true"
+    | 
+      ## This module will not be in a chunk
+      "false"
+    | 
+      ## Chunking of this module depends on the overall chunking algorithm
+      "auto"
+  db.module.chunk.attribute =
+    
+    ## Specifies chunking for this module
+    [ a:defaultValue = "auto" ]
+    attribute chunk { db.module.chunk.enumeration }
+  db.module.resourceref.attribute =
+    
+    ## Indicates a single resource from which to construct this module
+    attribute resourceref { xsd:IDREF }
+  db.module.omittitles.attribute =
+    
+    ## Indicates if titles should be omitted when including a resource
+    attribute omittitles { xsd:boolean }?
+  db.module.contentonly.attribute =
+    
+    ## Indicates if only the content should be copied when including a resource
+    attribute contentonly { xsd:boolean }?
+  db.module.renderas.attribute =
+    
+    ## Specifies the DocBook element to which this unit should be renamed
+    attribute renderas { xsd:QName }
+  db.module.attlist =
+    db.module.role.attribute?
+    & db.module.chunk.attribute?
+    & db.module.resourceref.attribute?
+    & db.module.omittitles.attribute?
+    & db.module.contentonly.attribute?
+    & db.module.renderas.attribute?
+    & db.common.attributes
+  db.module.info = db.info?
+  db.module =
+    
+    ## A modular component within a structure
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:module"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Specification of renderas"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:module"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@renderas and db:output/@renderas"
+            "The renderas attribute can be specified on either the structure or output, but not both."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element module {
+      db.module.attlist,
+      ((db.output | db.filterin | db.filterout)*,
+       db.module.info,
+       db.merge?,
+       db.module*)
+    }
+}
+div {
+  db.filterout.role.attribute = attribute role { text }
+  db.filterout.attlist =
+    db.filterout.role.attribute? & db.common.attributes
+  db.filterout =
+    
+    ## Elements with effectivity attributes matching this element are suppressed
+    element filterout { db.filterout.attlist, empty }
+}
+div {
+  db.filterin.role.attribute = attribute role { text }
+  db.filterin.attlist =
+    db.filterin.role.attribute? & db.common.attributes
+  db.filterin =
+    
+    ## Elements with effectivity attributes matching this element are allowed
+    element filterin { db.filterin.attlist, empty }
+}
+div {
+  db.relationships.role.attribute = attribute role { text }
+  db.relationships.type.attribute =
+    
+    ## Identifies the type of the contained relationships
+    attribute type { xsd:NMTOKENS }
+  db.relationships.attlist =
+    db.relationships.role.attribute?
+    & db.relationships.type.attribute?
+    & db.common.attributes
+  db.relationships.info = db._info
+  db.relationships =
+    
+    ## Groups relationship elements to define associations between resources
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:relationships"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element relationships {
+      db.relationships.attlist,
+      db.relationships.info,
+      (db.relationship | db.instance)+
+    }
+}
+div {
+  db.relationship.role.attribute = attribute role { text }
+  db.relationship.type.attribute =
+    
+    ## Identifies the type of the relationship
+    attribute type { xsd:NMTOKEN }
+  db.relationship.attlist =
+    db.relationship.role.attribute?
+    & db.relationship.type.attribute?
+    & db.linkend.attribute?
+    & db.common.attributes
+  db.relationship =
+    
+    ## A relationship associates one or more resources
+    element relationship {
+      db.relationship.attlist, db.association, db.instance+
+    }
+}
+div {
+  db.association.role.attribute = attribute role { text }
+  db.association.attlist =
+    db.association.role.attribute?
+    & db.linkend.attribute?
+    & db.common.attributes
+  db.association =
+    
+    ## Identifies the type of relationship between one or more resources
+    element association { db.association.attlist, text? }
+}
+div {
+  db.instance.role.attribute = attribute role { text }
+  db.instance.linking.attribute =
+    
+    ## Specifies the type of link for this instance
+    attribute linking { xsd:NMTOKENS }
+  db.instance.attlist =
+    db.instance.role.attribute?
+    & db.instance.linking.attribute?
+    & db.common.attributes
+  db.instance =
+    
+    ## Identifies a resource that is part of a relationship
+    element instance {
+      db.instance.attlist, db.linkend.attribute, empty
+    }
+}
+div {
+  db.transforms.role.attribute = attribute role { text }
+  db.transforms.attlist =
+    db.transforms.role.attribute? & db.common.attributes
+  db.transforms.info = db._info
+  db.transforms =
+    
+    ## List of transforms for converting from non-DocBook schemas
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:transforms"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element transforms {
+      db.transforms.attlist, db.transforms.info, db.transform+
+    }
+}
+div {
+  db.transform.role.attribute = attribute role { text }
+  db.transform.grammar.attribute = db.grammar.attribute
+  db.transform.fileref.attribute =
+    
+    ## Indentifies the location of the data by URI
+    attribute fileref { xsd:anyURI }
+  db.transform.name.attribute =
+    
+    ## Identifies the location of the data by reference
+    attribute name { xsd:NMTOKEN }
+  db.transform.attlist =
+    db.transform.role.attribute?
+    & (db.transform.grammar.attribute | db.transform.name.attribute)
+    & db.transform.fileref.attribute
+    & db.common.attributes
+  db.transform =
+    
+    ## Identifies a transform for converting from a non-DocBook schema
+    element transform { db.transform.attlist, empty }
+}
+div {
+  db.description.role.attribute = attribute role { text }
+  db.description.attlist =
+    db.description.role.attribute? & db.common.attributes
+  db.description =
+    
+    ## A description of a resource or resources
+    element description { db.description.attlist, db._text }
+}
Index: stylesheets/lfs-xsl/docbook-xsl-1.78.1/assembly/schema/docbook51b7.rnc
===================================================================
--- stylesheets/lfs-xsl/docbook-xsl-1.78.1/assembly/schema/docbook51b7.rnc	(revision 15c7d39533a1eb1da0748011f3378fd0f02ed14d)
+++ stylesheets/lfs-xsl/docbook-xsl-1.78.1/assembly/schema/docbook51b7.rnc	(revision 15c7d39533a1eb1da0748011f3378fd0f02ed14d)
@@ -0,0 +1,12976 @@
+namespace a = "http://relaxng.org/ns/compatibility/annotations/1.0"
+namespace ctrl = "http://nwalsh.com/xmlns/schema-control/"
+default namespace db = "http://docbook.org/ns/docbook"
+namespace html = "http://www.w3.org/1999/xhtml"
+namespace mml = "http://www.w3.org/1998/Math/MathML"
+namespace rng = "http://relaxng.org/ns/structure/1.0"
+namespace s = "http://purl.oclc.org/dsdl/schematron"
+namespace svg = "http://www.w3.org/2000/svg"
+namespace xlink = "http://www.w3.org/1999/xlink"
+
+# This file is part of DocBook V5.1b7
+# 
+# Copyright 1992-2011 HaL Computer Systems, Inc.,
+# O'Reilly & Associates, Inc., ArborText, Inc., Fujitsu Software
+# Corporation, Norman Walsh, Sun Microsystems, Inc., and the
+# Organization for the Advancement of Structured Information
+# Standards (OASIS).
+# 
+# Permission to use, copy, modify and distribute the DocBook schema
+# and its accompanying documentation for any purpose and without fee
+# is hereby granted in perpetuity, provided that the above copyright
+# notice and this paragraph appear in all copies. The copyright
+# holders make no representation about the suitability of the schema
+# for any purpose. It is provided "as is" without expressed or implied
+# warranty.
+# 
+# If you modify the DocBook schema in any way, label your schema as a
+# variant of DocBook. See the reference documentation
+# (http://docbook.org/tdg5/en/html/ch05.html#s-notdocbook)
+# for more information.
+# 
+# Please direct all questions, bug reports, or suggestions for changes
+# to the docbook@lists.oasis-open.org mailing list. For more
+# information, see http://www.oasis-open.org/docbook/.
+# 
+# ======================================================================
+start =
+  (db.set
+   | db.book
+   | db.divisions
+   | db.components
+   | db.navigation.components
+   | db.section
+   | db.para)
+  | (db.abstract
+     | db.mediaobject.content
+     | db.audiodata
+     | db.imagedata
+     | db.textdata
+     | db.videodata
+     | db.caption
+     | db.publishing.blocks
+     | db.formal.blocks
+     | db.informal.blocks
+     | db.formalpara
+     | db.inlinemediaobject
+     | db.list.blocks
+     | db.legalnotice
+     | db.verbatim.blocks
+     | db.graphic.blocks
+     | db.personblurb
+     | db.revhistory
+     | db.simpara
+     | db.step
+     | db.stepalternatives)
+  | (db.partintro | db.simplesect)
+  | db.annotation
+  | (db.sect1 | db.sect2 | db.sect3 | db.sect4 | db.sect5)
+  | (db.refentry | db.refsection | db.refsynopsisdiv)
+  | (db.refsect1 | db.refsect2 | db.refsect3)
+  | (db.glossary | db.glossdiv | db.glosslist)
+  | (db.bibliodiv | db.bibliolist)
+  | (db.setindex | db.index | db.indexdiv)
+  | (db.toc | db.tocdiv)
+  | (db.task | db.taskprerequisites | db.taskrelated | db.tasksummary)
+  | (db.calloutlist
+     | db.programlistingco
+     | db.screenco
+     | db.imageobjectco)
+  | (db.productionset | db.constraintdef)
+  | (db.msg
+     | db.msgexplan
+     | db.msgmain
+     | db.msgrel
+     | db.msgset
+     | db.msgsub)
+  | (db.qandadiv | db.qandaentry | db.qandaset)
+  | (db.equation | db.informalequation)
+  | db.cmdsynopsis
+  | (db.synopsis.blocks | db.funcsynopsisinfo | db.classsynopsisinfo)
+  | db.admonition.blocks
+  | db.topic
+div {
+  db._any.attribute =
+    
+    ## Any attribute, including any attribute in any namespace.
+    attribute * { text }
+  db._any =
+    
+    ## Any element from almost any namespace
+    element * - (db:* | html:*) {
+      (db._any.attribute | text | db._any)*
+    }
+}
+db.arch.attribute =
+  
+  ## Designates the computer or chip architecture to which the element applies
+  attribute arch { text }
+db.audience.attribute =
+  
+  ## Designates the intended audience to which the element applies, for example, system administrators, programmers, or new users.
+  attribute audience { text }
+db.condition.attribute =
+  
+  ## provides a standard place for application-specific effectivity
+  attribute condition { text }
+db.conformance.attribute =
+  
+  ## Indicates standards conformance characteristics of the element
+  attribute conformance { text }
+db.os.attribute =
+  
+  ## Indicates the operating system to which the element is applicable
+  attribute os { text }
+db.revision.attribute =
+  
+  ## Indicates the editorial revision to which the element belongs
+  attribute revision { text }
+db.security.attribute =
+  
+  ## Indicates something about the security level associated with the element to which it applies
+  attribute security { text }
+db.userlevel.attribute =
+  
+  ## Indicates the level of user experience for which the element applies
+  attribute userlevel { text }
+db.vendor.attribute =
+  
+  ## Indicates the computer vendor to which the element applies.
+  attribute vendor { text }
+db.wordsize.attribute =
+  
+  ## Indicates the word size (width in bits) of the computer architecture to which the element applies
+  attribute wordsize { text }
+db.effectivity.attributes =
+  db.arch.attribute?
+  & db.audience.attribute?
+  & db.condition.attribute?
+  & db.conformance.attribute?
+  & db.os.attribute?
+  & db.revision.attribute?
+  & db.security.attribute?
+  & db.userlevel.attribute?
+  & db.vendor.attribute?
+  & db.wordsize.attribute?
+db.endterm.attribute =
+  
+  ## Points to the element whose content is to be used as the text of the link
+  attribute endterm { xsd:IDREF }
+db.linkend.attribute =
+  
+  ## Points to an internal link target by identifying the value of its xml:id attribute
+  attribute linkend { xsd:IDREF }
+db.linkends.attribute =
+  
+  ## Points to one or more internal link targets by identifying the value of their xml:id attributes
+  attribute linkends { xsd:IDREFS }
+db.xlink.href.attribute =
+  
+  ## Identifies a link target with a URI
+  attribute xlink:href { xsd:anyURI }
+db.xlink.simple.type.attribute =
+  
+  ## Identifies the XLink link type
+  attribute xlink:type {
+    
+    ## An XLink simple link type
+    "simple"
+  }
+db.xlink.role.attribute =
+  
+  ## Identifies the XLink role of the link
+  attribute xlink:role { xsd:anyURI }
+db.xlink.arcrole.attribute =
+  
+  ## Identifies the XLink arcrole of the link
+  attribute xlink:arcrole { xsd:anyURI }
+db.xlink.title.attribute =
+  
+  ## Identifies the XLink title of the link
+  attribute xlink:title { text }
+db.xlink.show.enumeration =
+  
+  ## An application traversing to the ending resource should load it in a new window, frame, pane, or other relevant presentation context.
+  "new"
+  | 
+    ## An application traversing to the ending resource should load the resource in the same window, frame, pane, or other relevant presentation context in which the starting resource was loaded.
+    "replace"
+  | 
+    ## An application traversing to the ending resource should load its presentation in place of the presentation of the starting resource.
+    "embed"
+  | 
+    ## The behavior of an application traversing to the ending resource is unconstrained by XLink. The application should look for other markup present in the link to determine the appropriate behavior.
+    "other"
+  | 
+    ## The behavior of an application traversing to the ending resource is unconstrained by this specification. No other markup is present to help the application determine the appropriate behavior.
+    "none"
+db.xlink.show.attribute =
+  
+  ## Identifies the XLink show behavior of the link
+  attribute xlink:show { db.xlink.show.enumeration }
+db.xlink.actuate.enumeration =
+  
+  ## An application should traverse to the ending resource immediately on loading the starting resource.
+  "onLoad"
+  | 
+    ## An application should traverse from the starting resource to the ending resource only on a post-loading event triggered for the purpose of traversal.
+    "onRequest"
+  | 
+    ## The behavior of an application traversing to the ending resource is unconstrained by this specification. The application should look for other markup present in the link to determine the appropriate behavior.
+    "other"
+  | 
+    ## The behavior of an application traversing to the ending resource is unconstrained by this specification. No other markup is present to help the application determine the appropriate behavior.
+    "none"
+db.xlink.actuate.attribute =
+  
+  ## Identifies the XLink actuate behavior of the link
+  attribute xlink:actuate { db.xlink.actuate.enumeration }
+db.xlink.simple.link.attributes =
+  db.xlink.simple.type.attribute?
+  & db.xlink.href.attribute?
+  & db.xlink.role.attribute?
+  & db.xlink.arcrole.attribute?
+  & db.xlink.title.attribute?
+  & db.xlink.show.attribute?
+  & db.xlink.actuate.attribute?
+db.xlink.attributes =
+  db.xlink.simple.link.attributes
+  | (db.xlink.extended.link.attributes
+     | db.xlink.locator.link.attributes
+     | db.xlink.arc.link.attributes
+     | db.xlink.resource.link.attributes
+     | db.xlink.title.link.attributes)
+db.xml.id.attribute =
+  
+  ## Identifies the unique ID value of the element
+  attribute xml:id { xsd:ID }
+db.version.attribute =
+  
+  ## Specifies the DocBook version of the element and its descendants
+  attribute version { text }
+db.xml.lang.attribute =
+  
+  ## Specifies the natural language of the element and its descendants
+  attribute xml:lang { text }
+db.xml.base.attribute =
+  
+  ## Specifies the base URI of the element and its descendants
+  attribute xml:base { xsd:anyURI }
+db.remap.attribute =
+  
+  ## Provides the name or similar semantic identifier assigned to the content in some previous markup scheme
+  attribute remap { text }
+db.xreflabel.attribute =
+  
+  ## Provides the text that is to be generated for a cross reference to the element
+  attribute xreflabel { text }
+db.xrefstyle.attribute =
+  
+  ## Specifies a keyword or keywords identifying additional style information
+  attribute xrefstyle { text }
+db.revisionflag.enumeration =
+  
+  ## The element has been changed.
+  "changed"
+  | 
+    ## The element is new (has been added to the document).
+    "added"
+  | 
+    ## The element has been deleted.
+    "deleted"
+  | 
+    ## Explicitly turns off revision markup for this element.
+    "off"
+db.revisionflag.attribute =
+  
+  ## Identifies the revision status of the element
+  attribute revisionflag { db.revisionflag.enumeration }
+db.dir.enumeration =
+  
+  ## Left-to-right text
+  "ltr"
+  | 
+    ## Right-to-left text
+    "rtl"
+  | 
+    ## Left-to-right override
+    "lro"
+  | 
+    ## Right-to-left override
+    "rlo"
+db.dir.attribute =
+  
+  ## Identifies the direction of text in an element
+  attribute dir { db.dir.enumeration }
+db.common.base.attributes =
+  db.version.attribute?
+  & db.xml.lang.attribute?
+  & db.xml.base.attribute?
+  & db.remap.attribute?
+  & db.xreflabel.attribute?
+  & db.revisionflag.attribute?
+  & db.dir.attribute?
+  & db.effectivity.attributes
+db.common.attributes =
+  db.xml.id.attribute?
+  & db.common.base.attributes
+  & db.annotations.attribute?
+db.common.idreq.attributes =
+  db.xml.id.attribute
+  & db.common.base.attributes
+  & db.annotations.attribute?
+db.common.linking.attributes =
+  (db.linkend.attribute | db.xlink.attributes)?
+db.common.req.linking.attributes =
+  db.linkend.attribute | db.xlink.attributes
+db.common.data.attributes =
+  
+  ## Specifies the format of the data
+  attribute format { text }?,
+  (
+   ## Indentifies the location of the data by URI
+   attribute fileref { xsd:anyURI }
+   | 
+     ## Identifies the location of the data by external identifier (entity name)
+     attribute entityref { xsd:ENTITY })
+db.verbatim.continuation.enumeration =
+  
+  ## Line numbering continues from the immediately preceding element with the same name.
+  "continues"
+  | 
+    ## Line numbering restarts (begins at 1, usually).
+    "restarts"
+db.verbatim.continuation.attribute =
+  
+  ## Determines whether line numbering continues from the previous element or restarts.
+  attribute continuation { db.verbatim.continuation.enumeration }
+db.verbatim.linenumbering.enumeration =
+  
+  ## Lines are numbered.
+  "numbered"
+  | 
+    ## Lines are not numbered.
+    "unnumbered"
+db.verbatim.linenumbering.attribute =
+  
+  ## Determines whether lines are numbered.
+  attribute linenumbering { db.verbatim.linenumbering.enumeration }
+db.verbatim.startinglinenumber.attribute =
+  
+  ## Specifies the initial line number.
+  attribute startinglinenumber { xsd:integer }
+db.verbatim.language.attribute =
+  
+  ## Identifies the language (i.e. programming language) of the verbatim content.
+  attribute language { text }
+db.verbatim.xml.space.attribute =
+  
+  ## Can be used to indicate explicitly that whitespace in the verbatim environment is preserved. Whitespace must always be preserved in verbatim environments whether this attribute is specified or not.
+  attribute xml:space {
+    
+    ## Whitespace must be preserved.
+    "preserve"
+  }
+db.verbatim.common.attributes =
+  db.verbatim.continuation.attribute?
+  & db.verbatim.linenumbering.attribute?
+  & db.verbatim.startinglinenumber.attribute?
+  & db.verbatim.xml.space.attribute?
+db.verbatim.attributes =
+  db.verbatim.common.attributes & db.verbatim.language.attribute?
+db.label.attribute =
+  
+  ## Specifies an identifying string for presentation purposes
+  attribute label { text }
+db.width.characters.attribute =
+  
+  ## Specifies the width (in characters) of the element
+  attribute width { xsd:nonNegativeInteger }
+db.spacing.enumeration =
+  
+  ## The spacing should be "compact".
+  "compact"
+  | 
+    ## The spacing should be "normal".
+    "normal"
+db.spacing.attribute =
+  
+  ## Specifies (a hint about) the spacing of the content
+  attribute spacing { db.spacing.enumeration }
+db.pgwide.enumeration =
+  
+  ## The element should be rendered in the current text flow (with the flow column width).
+  "0"
+  | 
+    ## The element should be rendered across the full text page.
+    "1"
+db.pgwide.attribute =
+  
+  ## Indicates if the element is rendered across the column or the page
+  attribute pgwide { db.pgwide.enumeration }
+db.language.attribute =
+  
+  ## Identifies the language (i.e. programming language) of the content.
+  attribute language { text }
+db.performance.enumeration =
+  
+  ## The content describes an optional step or steps.
+  "optional"
+  | 
+    ## The content describes a required step or steps.
+    "required"
+db.performance.attribute =
+  
+  ## Specifies if the content is required or optional.
+  attribute performance { db.performance.enumeration }
+db.floatstyle.attribute =
+  
+  ## Specifies style information to be used when rendering the float
+  attribute floatstyle { text }
+db.width.attribute =
+  
+  ## Specifies the width of the element
+  attribute width { text }
+db.depth.attribute =
+  
+  ## Specifies the depth of the element
+  attribute depth { text }
+db.contentwidth.attribute =
+  
+  ## Specifies the width of the content rectangle
+  attribute contentwidth { text }
+db.contentdepth.attribute =
+  
+  ## Specifies the depth of the content rectangle
+  attribute contentdepth { text }
+db.scalefit.enumeration =
+  
+  ## False (do not scale-to-fit; anamorphic scaling may occur)
+  "0"
+  | 
+    ## True (scale-to-fit; anamorphic scaling is forbidden)
+    "1"
+db.scale.attribute =
+  
+  ## Specifies the scaling factor
+  attribute scale { xsd:positiveInteger }
+db.classid.attribute =
+  
+  ## Specifies a classid for a media object player
+  attribute classid { text }
+db.autoplay.attribute =
+  
+  ## Specifies the autoplay setting for a media object player
+  attribute autoplay { text }
+db.halign.enumeration =
+  
+  ## Centered horizontally
+  "center"
+  | 
+    ## Aligned horizontally on the specified character
+    "char"
+  | 
+    ## Fully justified (left and right margins or edges)
+    "justify"
+  | 
+    ## Left aligned
+    "left"
+  | 
+    ## Right aligned
+    "right"
+db.valign.enumeration =
+  
+  ## Aligned on the bottom of the region
+  "bottom"
+  | 
+    ## Centered vertically
+    "middle"
+  | 
+    ## Aligned on the top of the region
+    "top"
+db.biblio.class.enumeration =
+  
+  ## A digital object identifier.
+  "doi"
+  | 
+    ## An international standard book number.
+    "isbn"
+  | 
+    ## An international standard technical report number (ISO 10444).
+    "isrn"
+  | 
+    ## An international standard serial number.
+    "issn"
+  | 
+    ## An international standard text code.
+    "istc"
+  | 
+    ## A Library of Congress reference number.
+    "libraryofcongress"
+  | 
+    ## A publication number (an internal number or possibly organizational standard).
+    "pubsnumber"
+  | 
+    ## A Uniform Resource Identifier
+    "uri"
+db.biblio.class-enum.attribute =
+  
+  ## Identifies the kind of bibliographic identifier
+  attribute class { db.biblio.class.enumeration }?
+db.biblio.class-other.attribute =
+  
+  ## Identifies the nature of the non-standard bibliographic identifier
+  attribute otherclass { xsd:NMTOKEN }
+db.biblio.class-other.attributes =
+  
+  ## Identifies the kind of bibliographic identifier
+  attribute class {
+    
+    ## Indicates that the identifier is some 'other' kind.
+    "other"
+  }
+  & db.biblio.class-other.attribute
+db.biblio.class.attribute =
+  db.biblio.class-enum.attribute | db.biblio.class-other.attributes
+db.ubiq.inlines =
+  (db.inlinemediaobject
+   | db.remark
+   | db.link.inlines
+   | db.alt
+   | db.trademark
+   | # below, effectively the publishing inlines (as of 5.0)
+     db.abbrev
+   | db.acronym
+   | db.date
+   | db._emphasis
+   | db.footnote
+   | db.footnoteref
+   | db._foreignphrase
+   | db._phrase
+   | db._quote
+   | db.subscript
+   | db.superscript
+   | db.wordasword)
+  | db.annotation
+  | (db._firstterm | db._glossterm)
+  | db.indexterm
+  | db.coref
+db._text = (text | db.ubiq.inlines | db._phrase | db.replaceable)*
+db._title = db.title? & db.titleabbrev? & db.subtitle?
+db._title.req = db.title & db.titleabbrev? & db.subtitle?
+db._title.only = db.title? & db.titleabbrev?
+db._title.onlyreq = db.title & db.titleabbrev?
+db._info = (db._title, db.titleforbidden.info?) | db.info?
+db._info.title.req =
+  (db._title.req, db.titleforbidden.info?) | db.titlereq.info
+db._info.title.only =
+  (db._title.only, db.titleforbidden.info?) | db.titleonly.info
+db._info.title.onlyreq =
+  (db._title.onlyreq, db.titleforbidden.info?) | db.titleonlyreq.info
+db._info.title.forbidden = db.titleforbidden.info?
+db.all.inlines =
+  text
+  | db.ubiq.inlines
+  | db.general.inlines
+  | db.domain.inlines
+  | db.extension.inlines
+db.general.inlines =
+  db.publishing.inlines
+  | db.product.inlines
+  | db.bibliography.inlines
+  | db.graphic.inlines
+  | db.indexing.inlines
+  | db.link.inlines
+db.domain.inlines =
+  db.technical.inlines
+  | db.math.inlines
+  | db.markup.inlines
+  | db.gui.inlines
+  | db.keyboard.inlines
+  | db.os.inlines
+  | db.programming.inlines
+  | db.error.inlines
+db.technical.inlines =
+  (db.replaceable | db.package | db.parameter)
+  | db.termdef
+  | db.nonterminal
+  | (db.systemitem | db.option | db.optional | db.property)
+db.product.inlines =
+  db.trademark
+  | (db.productnumber
+     | db.productname
+     | db.database
+     | db.application
+     | db.hardware)
+db.bibliography.inlines =
+  db.citation
+  | db.citerefentry
+  | db.citetitle
+  | db.citebiblioid
+  | db.author
+  | db.person
+  | db.personname
+  | db.org
+  | db.orgname
+  | db.editor
+  | db.jobtitle
+db.publishing.inlines =
+  (db.abbrev
+   | db.acronym
+   | db.date
+   | db.emphasis
+   | db.footnote
+   | db.footnoteref
+   | db.foreignphrase
+   | db.phrase
+   | db.quote
+   | db.subscript
+   | db.superscript
+   | db.wordasword)
+  | db.glossary.inlines
+  | db.coref
+db.graphic.inlines = db.inlinemediaobject
+db.indexing.inlines = notAllowed | db.indexterm
+db.link.inlines =
+  (db.xref | db.link | db.olink | db.anchor) | db.biblioref
+db.extension.inlines = notAllowed
+db.nopara.blocks =
+  (db.list.blocks
+   | db.formal.blocks
+   | db.informal.blocks
+   | db.publishing.blocks
+   | db.graphic.blocks
+   | db.technical.blocks
+   | db.verbatim.blocks
+   | db.bridgehead
+   | db.remark
+   | db.revhistory)
+  | db.indexterm
+  | db.synopsis.blocks
+  | db.admonition.blocks
+db.para.blocks = db.anchor | db.para | db.formalpara | db.simpara
+db.all.blocks =
+  (db.nopara.blocks | db.para.blocks | db.extension.blocks)
+  | db.annotation
+db.formal.blocks = (db.example | db.figure | db.table) | db.equation
+db.informal.blocks =
+  (db.informalexample | db.informalfigure | db.informaltable)
+  | db.informalequation
+db.publishing.blocks =
+  db.sidebar | db.blockquote | db.address | db.epigraph
+db.graphic.blocks = db.mediaobject | db.screenshot
+db.technical.blocks =
+  db.procedure
+  | db.task
+  | (db.productionset | db.constraintdef)
+  | db.msgset
+db.list.blocks =
+  (db.itemizedlist
+   | db.orderedlist
+   | db.procedure
+   | db.simplelist
+   | db.variablelist
+   | db.segmentedlist)
+  | db.glosslist
+  | db.bibliolist
+  | db.calloutlist
+  | db.qandaset
+db.verbatim.blocks =
+  (db.screen | db.literallayout)
+  | (db.programlistingco | db.screenco)
+  | (db.programlisting | db.synopsis)
+db.extension.blocks = notAllowed
+db.info.extension = db._any
+db.info.elements =
+  (db.abstract
+   | db.address
+   | db.artpagenums
+   | db.author
+   | db.authorgroup
+   | db.authorinitials
+   | db.bibliocoverage
+   | db.biblioid
+   | db.bibliosource
+   | db.collab
+   | db.confgroup
+   | db.contractsponsor
+   | db.contractnum
+   | db.copyright
+   | db.cover
+   | db.date
+   | db.edition
+   | db.editor
+   | db.issuenum
+   | db.keywordset
+   | db.legalnotice
+   | db.mediaobject
+   | db.org
+   | db.orgname
+   | db.othercredit
+   | db.pagenums
+   | db.printhistory
+   | db.pubdate
+   | db.publisher
+   | db.publishername
+   | db.releaseinfo
+   | db.revhistory
+   | db.seriesvolnums
+   | db.subjectset
+   | db.volumenum
+   | db.info.extension)
+  | db.annotation
+  | db.extendedlink
+  | (db.bibliomisc | db.bibliomset | db.bibliorelation | db.biblioset)
+  | db.itermset
+  | (db.productname | db.productnumber)
+db.bibliographic.elements =
+  db.info.elements
+  | db.publishing.inlines
+  | db.citerefentry
+  | db.citetitle
+  | db.citebiblioid
+  | db.person
+  | db.personblurb
+  | db.personname
+  | db.subtitle
+  | db.title
+  | db.titleabbrev
+div {
+  db.title.role.attribute = attribute role { text }
+  db.title.attlist =
+    db.title.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.title =
+    
+    ## The text of the title of a section of a document or of a formal block-level element
+    element title { db.title.attlist, db.all.inlines* }
+}
+div {
+  db.titleabbrev.role.attribute = attribute role { text }
+  db.titleabbrev.attlist =
+    db.titleabbrev.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.titleabbrev =
+    
+    ## The abbreviation of a title
+    element titleabbrev { db.titleabbrev.attlist, db.all.inlines* }
+}
+div {
+  db.subtitle.role.attribute = attribute role { text }
+  db.subtitle.attlist =
+    db.subtitle.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.subtitle =
+    
+    ## The subtitle of a document
+    element subtitle { db.subtitle.attlist, db.all.inlines* }
+}
+div {
+  db.info.role.attribute = attribute role { text }
+  db.info.attlist = db.info.role.attribute? & db.common.attributes
+  db.info =
+    
+    ## A wrapper for information about a component or other block
+    element info { db.info.attlist, (db._title & db.info.elements*) }
+}
+div {
+  db.titlereq.info.role.attribute = attribute role { text }
+  db.titlereq.info.attlist =
+    db.titlereq.info.role.attribute? & db.common.attributes
+  db.titlereq.info =
+    
+    ## A wrapper for information about a component or other block with a required title
+    element info {
+      db.titlereq.info.attlist, (db._title.req & db.info.elements*)
+    }
+}
+div {
+  db.titleonly.info.role.attribute = attribute role { text }
+  db.titleonly.info.attlist =
+    db.titleonly.info.role.attribute? & db.common.attributes
+  db.titleonly.info =
+    
+    ## A wrapper for information about a component or other block with only a title
+    element info {
+      db.titleonly.info.attlist, (db._title.only & db.info.elements*)
+    }
+}
+div {
+  db.titleonlyreq.info.role.attribute = attribute role { text }
+  db.titleonlyreq.info.attlist =
+    db.titleonlyreq.info.role.attribute? & db.common.attributes
+  db.titleonlyreq.info =
+    
+    ## A wrapper for information about a component or other block with only a required title
+    element info {
+      db.titleonlyreq.info.attlist,
+      (db._title.onlyreq & db.info.elements*)
+    }
+}
+div {
+  db.titleforbidden.info.role.attribute = attribute role { text }
+  db.titleforbidden.info.attlist =
+    db.titleforbidden.info.role.attribute? & db.common.attributes
+  db.titleforbidden.info =
+    
+    ## A wrapper for information about a component or other block without a title
+    element info { db.titleforbidden.info.attlist, db.info.elements* }
+}
+div {
+  db.subjectset.role.attribute = attribute role { text }
+  db.subjectset.scheme.attribute =
+    
+    ## Identifies the controlled vocabulary used by this set's terms
+    attribute scheme { xsd:NMTOKEN }
+  db.subjectset.attlist =
+    db.subjectset.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.subjectset.scheme.attribute?
+  db.subjectset =
+    
+    ## A set of terms describing the subject matter of a document
+    element subjectset { db.subjectset.attlist, db.subject+ }
+}
+div {
+  db.subject.role.attribute = attribute role { text }
+  db.subject.weight.attribute =
+    
+    ## Specifies a ranking for this subject relative to other subjects in the same set
+    attribute weight { text }
+  db.subject.attlist =
+    db.subject.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.subject.weight.attribute?
+  db.subject =
+    
+    ## One of a group of terms describing the subject matter of a document
+    element subject { db.subject.attlist, db.subjectterm+ }
+}
+div {
+  db.subjectterm.role.attribute = attribute role { text }
+  db.subjectterm.attlist =
+    db.subjectterm.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.subjectterm =
+    
+    ## A term in a group of terms describing the subject matter of a document
+    element subjectterm { db.subjectterm.attlist, text }
+}
+div {
+  db.keywordset.role.attribute = attribute role { text }
+  db.keywordset.attlist =
+    db.keywordset.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.keywordset =
+    
+    ## A set of keywords describing the content of a document
+    element keywordset { db.keywordset.attlist, db.keyword+ }
+}
+div {
+  db.keyword.role.attribute = attribute role { text }
+  db.keyword.attlist =
+    db.keyword.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.keyword =
+    
+    ## One of a set of keywords describing the content of a document
+    element keyword { db.keyword.attlist, text }
+}
+db.table.choice = notAllowed | db.cals.table | db.html.table
+db.informaltable.choice =
+  notAllowed | db.cals.informaltable | db.html.informaltable
+db.table = db.table.choice
+db.informaltable = db.informaltable.choice
+div {
+  db.procedure.role.attribute = attribute role { text }
+  db.procedure.attlist =
+    db.procedure.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.procedure.info = db._info.title.only
+  db.procedure =
+    
+    ## A list of operations to be performed in a well-defined sequence
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:procedure"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element procedure {
+      db.procedure.attlist, db.procedure.info, db.all.blocks*, db.step+
+    }
+}
+div {
+  db.step.role.attribute = attribute role { text }
+  db.step.attlist =
+    db.step.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.performance.attribute?
+  db.step.info = db._info.title.only
+  # This content model is blocks*, step|stepalternatives, blocks* but
+  # expressed this way it avoids UPA issues in XSD and DTD versions
+  db.step =
+    
+    ## A unit of action in a procedure
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:step"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element step {
+      db.step.attlist,
+      db.step.info,
+      ((db.all.blocks+,
+        ((db.substeps | db.stepalternatives), db.all.blocks*)?)
+       | ((db.substeps | db.stepalternatives), db.all.blocks*))
+    }
+}
+div {
+  db.stepalternatives.role.attribute = attribute role { text }
+  db.stepalternatives.attlist =
+    db.stepalternatives.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.performance.attribute?
+  db.stepalternatives.info = db._info.title.forbidden
+  db.stepalternatives =
+    
+    ## Alternative steps in a procedure
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:stepalternatives"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element stepalternatives {
+      db.stepalternatives.attlist, db.stepalternatives.info, db.step+
+    }
+}
+div {
+  db.substeps.role.attribute = attribute role { text }
+  db.substeps.attlist =
+    db.substeps.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.performance.attribute?
+  db.substeps =
+    
+    ## A wrapper for steps that occur within steps in a procedure
+    element substeps { db.substeps.attlist, db.step+ }
+}
+div {
+  db.sidebar.floatstyle.attribute = db.floatstyle.attribute
+  db.sidebar.role.attribute = attribute role { text }
+  db.sidebar.attlist =
+    db.sidebar.role.attribute?
+    & db.sidebar.floatstyle.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.sidebar.info = db._info
+  db.sidebar =
+    
+    ## A portion of a document that is isolated from the main narrative flow
+    [
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:sidebar"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:sidebar)"
+            "sidebar must not occur among the children or descendants of sidebar"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:sidebar"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element sidebar {
+      db.sidebar.attlist, db.sidebar.info, db.all.blocks+
+    }
+}
+div {
+  db.abstract.role.attribute = attribute role { text }
+  db.abstract.attlist =
+    db.abstract.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.abstract.info = db._info.title.only
+  db.abstract =
+    
+    ## A summary
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:abstract"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element abstract {
+      db.abstract.attlist, db.abstract.info, db.para.blocks+
+    }
+}
+div {
+  db.personblurb.role.attribute = attribute role { text }
+  db.personblurb.attlist =
+    db.personblurb.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.personblurb.info = db._info.title.only
+  db.personblurb =
+    
+    ## A short description or note about a person
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:personblurb"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element personblurb {
+      db.personblurb.attlist, db.personblurb.info, db.para.blocks+
+    }
+}
+div {
+  db.blockquote.role.attribute = attribute role { text }
+  db.blockquote.attlist =
+    db.blockquote.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.blockquote.info = db._info.title.only
+  db.blockquote =
+    
+    ## A quotation set off from the main text
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:blockquote"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element blockquote {
+      db.blockquote.attlist,
+      db.blockquote.info,
+      db.attribution?,
+      db.all.blocks+
+    }
+}
+div {
+  db.attribution.role.attribute = attribute role { text }
+  db.attribution.attlist =
+    db.attribution.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.attribution =
+    
+    ## The source of a block quote or epigraph
+    element attribution {
+      db.attribution.attlist,
+      (db._text
+       | db.person
+       | db.personname
+       | db.citetitle
+       | db.citation)*
+    }
+}
+div {
+  db.bridgehead.renderas.enumeration =
+    
+    ## Render as a first-level section
+    "sect1"
+    | 
+      ## Render as a second-level section
+      "sect2"
+    | 
+      ## Render as a third-level section
+      "sect3"
+    | 
+      ## Render as a fourth-level section
+      "sect4"
+    | 
+      ## Render as a fifth-level section
+      "sect5"
+  db.bridgehead.renderas-enum.attribute =
+    
+    ## Indicates how the bridge head should be rendered
+    attribute renderas { db.bridgehead.renderas.enumeration }?
+  db.bridgehead.renderas-other.attribute =
+    
+    ## Identifies the nature of the non-standard rendering
+    attribute otherrenderas { xsd:NMTOKEN }
+  db.bridgehead.renderas-other.attributes =
+    
+    ## Indicates how the bridge head should be rendered
+    attribute renderas {
+      
+      ## Identifies a non-standard rendering
+      "other"
+    }
+    & db.bridgehead.renderas-other.attribute
+  db.bridgehead.renderas.attribute =
+    db.bridgehead.renderas-enum.attribute
+    | db.bridgehead.renderas-other.attributes
+  db.bridgehead.role.attribute = attribute role { text }
+  db.bridgehead.attlist =
+    db.bridgehead.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.bridgehead.renderas.attribute?
+  db.bridgehead =
+    
+    ## A free-floating heading
+    element bridgehead { db.bridgehead.attlist, db.all.inlines* }
+}
+div {
+  db.remark.role.attribute = attribute role { text }
+  db.remark.attlist =
+    db.remark.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.remark =
+    
+    ## A remark (or comment) intended for presentation in a draft manuscript
+    element remark { db.remark.attlist, db.all.inlines* }
+}
+div {
+  db.epigraph.role.attribute = attribute role { text }
+  db.epigraph.attlist =
+    db.epigraph.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.epigraph.info = db._info.title.forbidden
+  db.epigraph =
+    
+    ## A short inscription at the beginning of a document or component
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:epigraph"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element epigraph {
+      db.epigraph.attlist,
+      db.epigraph.info,
+      db.attribution?,
+      (db.para.blocks | db.literallayout)+
+    }
+}
+div {
+  db.footnote.role.attribute = attribute role { text }
+  db.footnote.label.attribute =
+    
+    ## Identifies the desired footnote mark
+    attribute label { xsd:NMTOKEN }
+  db.footnote.attlist =
+    db.footnote.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.footnote.label.attribute?
+  db.footnote =
+    
+    ## A footnote
+    [
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:footnote"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:footnote)"
+            "footnote must not occur among the children or descendants of footnote"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:footnote"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:example)"
+            "example must not occur among the children or descendants of footnote"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:footnote"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:figure)"
+            "figure must not occur among the children or descendants of footnote"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:footnote"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:table)"
+            "table must not occur among the children or descendants of footnote"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:footnote"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:equation)"
+            "equation must not occur among the children or descendants of footnote"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:footnote"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:sidebar)"
+            "sidebar must not occur among the children or descendants of footnote"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:footnote"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:task)"
+            "task must not occur among the children or descendants of footnote"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:footnote"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:epigraph)"
+            "epigraph must not occur among the children or descendants of footnote"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:footnote"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:caution)"
+            "caution must not occur among the children or descendants of footnote"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:footnote"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:important)"
+            "important must not occur among the children or descendants of footnote"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:footnote"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:note)"
+            "note must not occur among the children or descendants of footnote"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:footnote"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:tip)"
+            "tip must not occur among the children or descendants of footnote"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:footnote"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:warning)"
+            "warning must not occur among the children or descendants of footnote"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element footnote { db.footnote.attlist, db.all.blocks+ }
+}
+div {
+  db.formalpara.role.attribute = attribute role { text }
+  db.formalpara.attlist =
+    db.formalpara.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.formalpara.info = db._info.title.onlyreq
+  db.formalpara =
+    
+    ## A paragraph with a title
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:formalpara"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element formalpara {
+      db.formalpara.attlist,
+      db.formalpara.info,
+      db.indexing.inlines*,
+      db.para
+    }
+}
+div {
+  db.para.role.attribute = attribute role { text }
+  db.para.attlist =
+    db.para.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.para.info = db._info.title.forbidden
+  db.para =
+    
+    ## A paragraph
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:para"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element para {
+      db.para.attlist,
+      db.para.info,
+      (db.all.inlines | db.nopara.blocks)*
+    }
+}
+div {
+  db.simpara.role.attribute = attribute role { text }
+  db.simpara.attlist =
+    db.simpara.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.simpara.info = db._info.title.forbidden
+  db.simpara =
+    
+    ## A paragraph that contains only text and inline markup, no block elements
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:simpara"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element simpara {
+      db.simpara.attlist, db.simpara.info, db.all.inlines*
+    }
+}
+div {
+  db.itemizedlist.role.attribute = attribute role { text }
+  db.itemizedlist.mark.attribute =
+    
+    ## Identifies the type of mark to be used on items in this list
+    attribute mark { xsd:NMTOKEN }
+  db.itemizedlist.attlist =
+    db.itemizedlist.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.spacing.attribute?
+    & db.itemizedlist.mark.attribute?
+  db.itemizedlist.info = db._info.title.only
+  db.itemizedlist =
+    
+    ## A list in which each entry is marked with a bullet or other dingbat
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:itemizedlist"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element itemizedlist {
+      db.itemizedlist.attlist,
+      db.itemizedlist.info,
+      db.all.blocks*,
+      db.listitem+
+    }
+}
+div {
+  db.orderedlist.role.attribute = attribute role { text }
+  db.orderedlist.continuation.enumeration =
+    
+    ## Specifies that numbering should begin where the preceding list left off
+    "continues"
+    | 
+      ## Specifies that numbering should begin again at 1
+      "restarts"
+  db.orderedlist.continuation.attribute =
+    
+    ## Indicates how list numbering should begin relative to the immediately preceding list
+    attribute continuation { db.orderedlist.continuation.enumeration }
+  db.orderedlist.startingnumber.attribute =
+    
+    ## Specifies the initial line number.
+    attribute startingnumber { xsd:integer }
+  db.orderedlist.inheritnum.enumeration =
+    
+    ## Specifies that numbering should ignore list nesting
+    "ignore"
+    | 
+      ## Specifies that numbering should inherit from outer-level lists
+      "inherit"
+  db.orderedlist.inheritnum.attribute =
+    
+    ## Indicates whether or not item numbering should be influenced by list nesting
+    attribute inheritnum { db.orderedlist.inheritnum.enumeration }
+  db.orderedlist.numeration.enumeration =
+    
+    ## Specifies Arabic numeration (1, 2, 3, …)
+    "arabic"
+    | 
+      ## Specifies upper-case alphabetic numeration (A, B, C, …)
+      "upperalpha"
+    | 
+      ## Specifies lower-case alphabetic numeration (a, b, c, …)
+      "loweralpha"
+    | 
+      ## Specifies upper-case Roman numeration (I, II, III, …)
+      "upperroman"
+    | 
+      ## Specifies lower-case Roman numeration (i, ii, iii …)
+      "lowerroman"
+  db.orderedlist.numeration.attribute =
+    
+    ## Indicates the desired numeration
+    attribute numeration { db.orderedlist.numeration.enumeration }
+  db.orderedlist.attlist =
+    db.orderedlist.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.spacing.attribute?
+    & (db.orderedlist.continuation.attribute
+       | db.orderedlist.startingnumber.attribute)?
+    & db.orderedlist.inheritnum.attribute?
+    & db.orderedlist.numeration.attribute?
+  db.orderedlist.info = db._info.title.only
+  db.orderedlist =
+    
+    ## A list in which each entry is marked with a sequentially incremented label
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:orderedlist"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element orderedlist {
+      db.orderedlist.attlist,
+      db.orderedlist.info,
+      db.all.blocks*,
+      db.listitem+
+    }
+}
+div {
+  db.listitem.role.attribute = attribute role { text }
+  db.listitem.override.attribute =
+    
+    ## Specifies the keyword for the type of mark that should be used on this
+    ##  item, instead of the mark that would be used by default
+    attribute override { xsd:NMTOKEN }
+  db.listitem.attlist =
+    db.listitem.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.listitem.override.attribute?
+  db.listitem =
+    
+    ## A wrapper for the elements of a list item
+    element listitem { db.listitem.attlist, db.all.blocks+ }
+}
+div {
+  db.segmentedlist.role.attribute = attribute role { text }
+  db.segmentedlist.attlist =
+    db.segmentedlist.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.segmentedlist.info = db._info.title.only
+  db.segmentedlist =
+    
+    ## A segmented list, a list of sets of elements
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:segmentedlist"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element segmentedlist {
+      db.segmentedlist.attlist,
+      db.segmentedlist.info,
+      db.segtitle+,
+      db.seglistitem+
+    }
+}
+div {
+  db.segtitle.role.attribute = attribute role { text }
+  db.segtitle.attlist =
+    db.segtitle.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.segtitle =
+    
+    ## The title of an element of a list item in a segmented list
+    element segtitle { db.segtitle.attlist, db.all.inlines* }
+}
+div {
+  db.seglistitem.role.attribute = attribute role { text }
+  db.seglistitem.attlist =
+    db.seglistitem.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.seglistitem =
+    
+    ## A list item in a segmented list
+    [
+      s:pattern [
+        name = "Cardinality of segments and titles"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:seglistitem"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "count(db:seg) = count(../db:segtitle)"
+            "The number of seg elements must be the same as the number of segtitle elements in the parent segmentedlist"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element seglistitem { db.seglistitem.attlist, db.seg+ }
+}
+div {
+  db.seg.role.attribute = attribute role { text }
+  db.seg.attlist =
+    db.seg.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.seg =
+    
+    ## An element of a list item in a segmented list
+    element seg { db.seg.attlist, db.all.inlines* }
+}
+div {
+  db.simplelist.role.attribute = attribute role { text }
+  db.simplelist.type.enumeration =
+    
+    ## A tabular presentation in row-major order.
+    "horiz"
+    | 
+      ## A tabular presentation in column-major order.
+      "vert"
+    | 
+      ## An inline presentation, usually a comma-delimited list.
+      "inline"
+  db.simplelist.type.attribute =
+    
+    ## Specifies the type of list presentation.
+    [ a:defaultValue = "vert" ]
+    attribute type { db.simplelist.type.enumeration }
+  db.simplelist.columns.attribute =
+    
+    ## Specifies the number of columns for horizontal or vertical presentation
+    attribute columns { xsd:integer }
+  db.simplelist.attlist =
+    db.simplelist.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.simplelist.type.attribute?
+    & db.simplelist.columns.attribute?
+  db.simplelist =
+    
+    ## An undecorated list of single words or short phrases
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:simplelist"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element simplelist { db.simplelist.attlist, db.member+ }
+}
+div {
+  db.member.role.attribute = attribute role { text }
+  db.member.attlist =
+    db.member.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.member =
+    
+    ## An element of a simple list
+    element member { db.member.attlist, db.all.inlines* }
+}
+div {
+  db.variablelist.role.attribute = attribute role { text }
+  db.variablelist.termlength.attribute =
+    
+    ## Indicates a length beyond which the presentation system may consider a term too long and select an alternate presentation for that term, item, or list
+    attribute termlength { text }
+  db.variablelist.attlist =
+    db.variablelist.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.spacing.attribute?
+    & db.variablelist.termlength.attribute?
+  db.variablelist.info = db._info.title.only
+  db.variablelist =
+    
+    ## A list in which each entry is composed of a set of one or more terms and an associated description
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:variablelist"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element variablelist {
+      db.variablelist.attlist,
+      db.variablelist.info,
+      db.all.blocks*,
+      db.varlistentry+
+    }
+}
+div {
+  db.varlistentry.role.attribute = attribute role { text }
+  db.varlistentry.attlist =
+    db.varlistentry.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.varlistentry =
+    
+    ## A wrapper for a set of terms and the associated description in a variable list
+    element varlistentry {
+      db.varlistentry.attlist, db.term+, db.listitem
+    }
+}
+div {
+  db.term.role.attribute = attribute role { text }
+  db.term.attlist =
+    db.term.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.term =
+    
+    ## The word or phrase being defined or described in a variable list
+    element term { db.term.attlist, db.all.inlines* }
+}
+div {
+  db.example.role.attribute = attribute role { text }
+  db.example.label.attribute = db.label.attribute
+  db.example.width.attribute = db.width.characters.attribute
+  db.example.pgwide.attribute = db.pgwide.attribute
+  db.example.floatstyle.attribute = db.floatstyle.attribute
+  db.example.attlist =
+    db.example.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.example.label.attribute?
+    & db.example.floatstyle.attribute?
+    & (db.example.width.attribute | db.example.pgwide.attribute)?
+  db.example.info = db._info.title.onlyreq
+  db.example =
+    
+    ## A formal example, with a title
+    [
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:example"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:example)"
+            "example must not occur among the children or descendants of example"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:example"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:figure)"
+            "figure must not occur among the children or descendants of example"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:example"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:table)"
+            "table must not occur among the children or descendants of example"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:example"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:equation)"
+            "equation must not occur among the children or descendants of example"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:example"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:caution)"
+            "caution must not occur among the children or descendants of example"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:example"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:important)"
+            "important must not occur among the children or descendants of example"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:example"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:note)"
+            "note must not occur among the children or descendants of example"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:example"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:tip)"
+            "tip must not occur among the children or descendants of example"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:example"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:warning)"
+            "warning must not occur among the children or descendants of example"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:example"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element example {
+      db.example.attlist, db.example.info, db.all.blocks+, db.caption?
+    }
+}
+div {
+  db.informalexample.role.attribute = attribute role { text }
+  db.informalexample.width.attribute = db.width.characters.attribute
+  db.informalexample.pgwide.attribute = db.pgwide.attribute
+  db.informalexample.floatstyle.attribute = db.floatstyle.attribute
+  db.informalexample.attlist =
+    db.informalexample.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.informalexample.floatstyle.attribute?
+    & (db.informalexample.width.attribute
+       | db.informalexample.pgwide.attribute)?
+  db.informalexample.info = db._info.title.forbidden
+  db.informalexample =
+    
+    ## A displayed example without a title
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:informalexample"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element informalexample {
+      db.informalexample.attlist,
+      db.informalexample.info,
+      db.all.blocks+,
+      db.caption?
+    }
+}
+db.verbatim.inlines = (db.all.inlines | db.lineannotation) | db.co
+db.verbatim.contentmodel =
+  db._info.title.forbidden, (db.textobject | db.verbatim.inlines*)
+div {
+  db.literallayout.role.attribute = attribute role { text }
+  db.literallayout.class.enumeration =
+    
+    ## The literal layout should be formatted with a monospaced font
+    "monospaced"
+    | 
+      ## The literal layout should be formatted with the current font
+      "normal"
+  db.literallayout.class.attribute =
+    
+    ## Specifies the class of literal layout
+    attribute class { db.literallayout.class.enumeration }
+  db.literallayout.attlist =
+    db.literallayout.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.verbatim.attributes
+    & db.literallayout.class.attribute?
+  db.literallayout =
+    
+    ## A block of text in which line breaks and white space are to be reproduced faithfully
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:literallayout"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element literallayout {
+      db.literallayout.attlist, db.verbatim.contentmodel
+    }
+}
+div {
+  db.screen.role.attribute = attribute role { text }
+  db.screen.width.attribute = db.width.characters.attribute
+  db.screen.attlist =
+    db.screen.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.verbatim.attributes
+    & db.screen.width.attribute?
+  db.screen =
+    
+    ## Text that a user sees or might see on a computer screen
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:screen"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element screen { db.screen.attlist, db.verbatim.contentmodel }
+}
+div {
+  db.screenshot.role.attribute = attribute role { text }
+  db.screenshot.attlist =
+    db.screenshot.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.screenshot.info = db._info
+  db.screenshot =
+    
+    ## A representation of what the user sees or might see on a computer screen
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:screenshot"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element screenshot {
+      db.screenshot.attlist, db.screenshot.info, db.mediaobject
+    }
+}
+div {
+  db.figure.role.attribute = attribute role { text }
+  db.figure.label.attribute = db.label.attribute
+  db.figure.pgwide.attribute = db.pgwide.attribute
+  db.figure.floatstyle.attribute = db.floatstyle.attribute
+  db.figure.attlist =
+    db.figure.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.figure.label.attribute?
+    & db.figure.pgwide.attribute?
+    & db.figure.floatstyle.attribute?
+  db.figure.info = db._info.title.onlyreq
+  db.figure =
+    
+    ## A formal figure, generally an illustration, with a title
+    [
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:figure"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:example)"
+            "example must not occur among the children or descendants of figure"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:figure"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:figure)"
+            "figure must not occur among the children or descendants of figure"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:figure"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:table)"
+            "table must not occur among the children or descendants of figure"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:figure"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:equation)"
+            "equation must not occur among the children or descendants of figure"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:figure"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:caution)"
+            "caution must not occur among the children or descendants of figure"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:figure"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:important)"
+            "important must not occur among the children or descendants of figure"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:figure"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:note)"
+            "note must not occur among the children or descendants of figure"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:figure"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:tip)"
+            "tip must not occur among the children or descendants of figure"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:figure"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:warning)"
+            "warning must not occur among the children or descendants of figure"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:figure"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element figure {
+      db.figure.attlist, db.figure.info, db.all.blocks+, db.caption?
+    }
+}
+div {
+  db.informalfigure.role.attribute = attribute role { text }
+  db.informalfigure.label.attribute = db.label.attribute
+  db.informalfigure.pgwide.attribute = db.pgwide.attribute
+  db.informalfigure.floatstyle.attribute = db.floatstyle.attribute
+  db.informalfigure.attlist =
+    db.informalfigure.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.informalfigure.label.attribute?
+    & db.informalfigure.pgwide.attribute?
+    & db.informalfigure.floatstyle.attribute?
+  db.informalfigure.info = db._info.title.forbidden
+  db.informalfigure =
+    
+    ## A untitled figure
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:informalfigure"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element informalfigure {
+      db.informalfigure.attlist,
+      db.informalfigure.info,
+      db.all.blocks+,
+      db.caption?
+    }
+}
+db.mediaobject.content =
+  (db.videoobject | db.audioobject | db.imageobject | db.textobject)
+  | db.imageobjectco
+div {
+  db.mediaobject.role.attribute = attribute role { text }
+  db.mediaobject.attlist =
+    db.mediaobject.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.mediaobject.info = db._info.title.forbidden
+  db.mediaobject =
+    
+    ## A displayed media object (video, audio, image, etc.)
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:mediaobject"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element mediaobject {
+      db.mediaobject.attlist,
+      db.mediaobject.info,
+      db.alt?,
+      db.mediaobject.content+,
+      db.caption?
+    }
+}
+div {
+  db.inlinemediaobject.role.attribute = attribute role { text }
+  db.inlinemediaobject.attlist =
+    db.inlinemediaobject.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.inlinemediaobject.info = db._info.title.forbidden
+  db.inlinemediaobject =
+    
+    ## An inline media object (video, audio, image, and so on)
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:inlinemediaobject"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element inlinemediaobject {
+      db.inlinemediaobject.attlist,
+      db.inlinemediaobject.info,
+      db.alt?,
+      db.mediaobject.content+
+    }
+}
+div {
+  db.videoobject.role.attribute = attribute role { text }
+  db.videoobject.attlist =
+    db.videoobject.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.videoobject.info = db._info.title.forbidden
+  db.videoobject =
+    
+    ## A wrapper for video data and its associated meta-information
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:videoobject"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element videoobject {
+      db.videoobject.attlist,
+      db.videoobject.info,
+      db.videodata,
+      db.multimediaparam*
+    }
+}
+div {
+  db.audioobject.role.attribute = attribute role { text }
+  db.audioobject.attlist =
+    db.audioobject.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.audioobject.info = db._info.title.forbidden
+  db.audioobject =
+    
+    ## A wrapper for audio data and its associated meta-information
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:audioobject"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element audioobject {
+      db.audioobject.attlist,
+      db.audioobject.info,
+      db.audiodata,
+      db.multimediaparam*
+    }
+}
+db.imageobject.content =
+  db.imagedata | db.imagedata.mathml | db.imagedata.svg
+div {
+  db.imageobject.role.attribute = attribute role { text }
+  db.imageobject.attlist =
+    db.imageobject.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.imageobject.info = db._info.title.forbidden
+  db.imageobject =
+    
+    ## A wrapper for image data and its associated meta-information
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:imageobject"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element imageobject {
+      db.imageobject.attlist,
+      db.imageobject.info,
+      db.imageobject.content
+    }
+}
+div {
+  db.textobject.role.attribute = attribute role { text }
+  db.textobject.attlist =
+    db.textobject.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.textobject.info = db._info.title.forbidden
+  db.textobject =
+    
+    ## A wrapper for a text description of an object and its associated meta-information
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:textobject"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element textobject {
+      db.textobject.attlist,
+      db.textobject.info,
+      (db.phrase | db.textdata | db.all.blocks+)
+    }
+}
+div {
+  db.videodata.role.attribute = attribute role { text }
+  db.videodata.align.enumeration = db.halign.enumeration
+  db.videodata.align.attribute =
+    
+    ## Specifies the (horizontal) alignment of the video data
+    attribute align { db.videodata.align.enumeration }
+  db.videodata.autoplay.attribute = db.autoplay.attribute
+  db.videodata.classid.attribute = db.classid.attribute
+  db.videodata.valign.enumeration = db.valign.enumeration
+  db.videodata.valign.attribute =
+    
+    ## Specifies the vertical alignment of the video data
+    attribute valign { db.videodata.valign.enumeration }
+  db.videodata.width.attribute = db.width.attribute
+  db.videodata.depth.attribute = db.depth.attribute
+  db.videodata.contentwidth.attribute = db.contentwidth.attribute
+  db.videodata.contentdepth.attribute = db.contentdepth.attribute
+  db.videodata.scalefit.enumeration = db.scalefit.enumeration
+  db.videodata.scalefit.attribute =
+    
+    ## Determines if anamorphic scaling is forbidden
+    attribute scalefit { db.videodata.scalefit.enumeration }
+  db.videodata.scale.attribute = db.scale.attribute
+  db.videodata.attlist =
+    db.videodata.role.attribute?
+    & db.common.attributes
+    & db.common.data.attributes
+    & db.videodata.align.attribute?
+    & db.videodata.valign.attribute?
+    & db.videodata.width.attribute?
+    & db.videodata.contentwidth.attribute?
+    & db.videodata.scalefit.attribute?
+    & db.videodata.scale.attribute?
+    & db.videodata.depth.attribute?
+    & db.videodata.contentdepth.attribute?
+    & db.videodata.autoplay.attribute?
+    & db.videodata.classid.attribute?
+  db.videodata.info = db._info.title.forbidden
+  db.videodata =
+    
+    ## Pointer to external video data
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:videodata"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element videodata { db.videodata.attlist, db.videodata.info }
+}
+div {
+  db.audiodata.role.attribute = attribute role { text }
+  db.audiodata.align.enumeration = db.halign.enumeration
+  db.audiodata.align.attribute =
+    
+    ## Specifies the (horizontal) alignment of the video data
+    attribute align { db.audiodata.align.enumeration }
+  db.audiodata.autoplay.attribute = db.autoplay.attribute
+  db.audiodata.classid.attribute = db.classid.attribute
+  db.audiodata.contentwidth.attribute = db.contentwidth.attribute
+  db.audiodata.contentdepth.attribute = db.contentdepth.attribute
+  db.audiodata.depth.attribute = db.depth.attribute
+  db.audiodata.scale.attribute = db.scale.attribute
+  db.audiodata.scalefit.enumeration = db.scalefit.enumeration
+  db.audiodata.scalefit.attribute =
+    
+    ## Determines if anamorphic scaling is forbidden
+    attribute scalefit { db.audiodata.scalefit.enumeration }
+  db.audiodata.valign.enumeration = db.valign.enumeration
+  db.audiodata.valign.attribute =
+    
+    ## Specifies the vertical alignment of the video data
+    attribute valign { db.audiodata.valign.enumeration }
+  db.audiodata.width.attribute = db.width.attribute
+  db.audiodata.attlist =
+    db.audiodata.role.attribute?
+    & db.common.attributes
+    & db.common.data.attributes
+    & db.audiodata.align.attribute?
+    & db.audiodata.autoplay.attribute?
+    & db.audiodata.classid.attribute?
+    & db.audiodata.contentdepth.attribute?
+    & db.audiodata.contentwidth.attribute?
+    & db.audiodata.depth.attribute?
+    & db.audiodata.scale.attribute?
+    & db.audiodata.scalefit.attribute?
+    & db.audiodata.valign.attribute?
+    & db.audiodata.width.attribute?
+  db.audiodata.info = db._info.title.forbidden
+  db.audiodata =
+    
+    ## Pointer to external audio data
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:audiodata"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element audiodata { db.audiodata.attlist, db.audiodata.info }
+}
+div {
+  db.imagedata.role.attribute = attribute role { text }
+  db.imagedata.align.enumeration = db.halign.enumeration
+  db.imagedata.align.attribute =
+    
+    ## Specifies the (horizontal) alignment of the image data
+    attribute align { db.imagedata.align.enumeration }
+  db.imagedata.valign.enumeration = db.valign.enumeration
+  db.imagedata.valign.attribute =
+    
+    ## Specifies the vertical alignment of the image data
+    attribute valign { db.imagedata.valign.enumeration }
+  db.imagedata.width.attribute = db.width.attribute
+  db.imagedata.depth.attribute = db.depth.attribute
+  db.imagedata.contentwidth.attribute = db.contentwidth.attribute
+  db.imagedata.contentdepth.attribute = db.contentdepth.attribute
+  db.imagedata.scalefit.enumeration = db.scalefit.enumeration
+  db.imagedata.scalefit.attribute =
+    
+    ## Determines if anamorphic scaling is forbidden
+    attribute scalefit { db.imagedata.scalefit.enumeration }
+  db.imagedata.scale.attribute = db.scale.attribute
+  db.imagedata.attlist =
+    db.imagedata.role.attribute?
+    & db.common.attributes
+    & db.common.data.attributes
+    & db.imagedata.align.attribute?
+    & db.imagedata.valign.attribute?
+    & db.imagedata.width.attribute?
+    & db.imagedata.contentwidth.attribute?
+    & db.imagedata.scalefit.attribute?
+    & db.imagedata.scale.attribute?
+    & db.imagedata.depth.attribute?
+    & db.imagedata.contentdepth.attribute?
+  db.imagedata.info = db._info.title.forbidden
+  db.imagedata =
+    
+    ## Pointer to external image data
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:imagedata"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element imagedata { db.imagedata.attlist, db.imagedata.info }
+}
+div {
+  db.textdata.role.attribute = attribute role { text }
+  db.textdata.encoding.attribute =
+    
+    ## Identifies the encoding of the text in the external file
+    attribute encoding { text }
+  db.textdata.attlist =
+    db.textdata.role.attribute?
+    & db.common.attributes
+    & db.common.data.attributes
+    & db.textdata.encoding.attribute?
+  db.textdata.info = db._info.title.forbidden
+  db.textdata =
+    
+    ## Pointer to external text data
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:textdata"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element textdata { db.textdata.attlist, db.textdata.info }
+}
+div {
+  db.multimediaparam.role.attribute = attribute role { text }
+  db.multimediaparam.name.attribute =
+    
+    ## Specifies the name of the parameter
+    attribute name { text }
+  db.multimediaparam.value.attribute =
+    
+    ## Specifies the value of the parameter
+    attribute value { text }
+  db.multimediaparam.valuetype.attribute =
+    
+    ## Specifies the type of the value of the parameter
+    attribute valuetype { text }
+  db.multimediaparam.attlist =
+    db.multimediaparam.role.attribute?
+    & db.common.attributes
+    & db.multimediaparam.name.attribute
+    & db.multimediaparam.value.attribute
+    & db.multimediaparam.valuetype.attribute?
+  db.multimediaparam =
+    
+    ## Application specific parameters for a media player
+    element multimediaparam { db.multimediaparam.attlist, empty }
+}
+div {
+  db.caption.role.attribute = attribute role { text }
+  db.caption.attlist =
+    db.caption.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.caption.info = db._info.title.forbidden
+  db.caption =
+    
+    ## A caption
+    [
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:caption"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:example)"
+            "example must not occur among the children or descendants of caption"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:caption"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:figure)"
+            "figure must not occur among the children or descendants of caption"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:caption"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:table)"
+            "table must not occur among the children or descendants of caption"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:caption"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:equation)"
+            "equation must not occur among the children or descendants of caption"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:caption"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:sidebar)"
+            "sidebar must not occur among the children or descendants of caption"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:caption"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:task)"
+            "task must not occur among the children or descendants of caption"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:caption"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:caution)"
+            "caution must not occur among the children or descendants of caption"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:caption"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:important)"
+            "important must not occur among the children or descendants of caption"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:caption"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:note)"
+            "note must not occur among the children or descendants of caption"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:caption"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:tip)"
+            "tip must not occur among the children or descendants of caption"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:caption"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:warning)"
+            "warning must not occur among the children or descendants of caption"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:caption"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element caption {
+      db.caption.attlist, db.caption.info, db.all.blocks+
+    }
+}
+div {
+  db.address.role.attribute = attribute role { text }
+  db.address.attlist =
+    db.address.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.verbatim.attributes
+  db.address =
+    
+    ## A real-world address, generally a postal address
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:address"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element address {
+      db.address.attlist,
+      (db._text
+       | db.personname
+       | db.orgname
+       | db.pob
+       | db.street
+       | db.city
+       | db.state
+       | db.postcode
+       | db.country
+       | db.phone
+       | db.fax
+       | db.email
+       | db.uri
+       | db.otheraddr)*
+    }
+}
+div {
+  db.street.role.attribute = attribute role { text }
+  db.street.attlist =
+    db.street.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.street =
+    
+    ## A street address in an address
+    element street { db.street.attlist, db._text }
+}
+div {
+  db.pob.role.attribute = attribute role { text }
+  db.pob.attlist =
+    db.pob.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.pob =
+    
+    ## A post office box in an address
+    element pob { db.pob.attlist, db._text }
+}
+div {
+  db.postcode.role.attribute = attribute role { text }
+  db.postcode.attlist =
+    db.postcode.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.postcode =
+    
+    ## A postal code in an address
+    element postcode { db.postcode.attlist, db._text }
+}
+div {
+  db.city.role.attribute = attribute role { text }
+  db.city.attlist =
+    db.city.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.city =
+    
+    ## The name of a city in an address
+    element city { db.city.attlist, db._text }
+}
+div {
+  db.state.role.attribute = attribute role { text }
+  db.state.attlist =
+    db.state.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.state =
+    
+    ## A state or province in an address
+    element state { db.state.attlist, db._text }
+}
+div {
+  db.country.role.attribute = attribute role { text }
+  db.country.attlist =
+    db.country.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.country =
+    
+    ## The name of a country
+    element country { db.country.attlist, db._text }
+}
+div {
+  db.phone.role.attribute = attribute role { text }
+  db.phone.attlist =
+    db.phone.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.phone =
+    
+    ## A telephone number
+    element phone { db.phone.attlist, db._text }
+}
+div {
+  db.fax.role.attribute = attribute role { text }
+  db.fax.attlist =
+    db.fax.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.fax =
+    
+    ## A fax number
+    element fax { db.fax.attlist, db._text }
+}
+div {
+  db.otheraddr.role.attribute = attribute role { text }
+  db.otheraddr.attlist =
+    db.otheraddr.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.otheraddr =
+    
+    ## Uncategorized information in address
+    element otheraddr { db.otheraddr.attlist, db._text }
+}
+div {
+  db.affiliation.role.attribute = attribute role { text }
+  db.affiliation.attlist =
+    db.affiliation.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.affiliation =
+    
+    ## The institutional affiliation of an individual
+    element affiliation {
+      db.affiliation.attlist,
+      db.shortaffil?,
+      db.jobtitle*,
+      (db.org? | (db.orgname?, db.orgdiv*, db.address*))
+    }
+}
+div {
+  db.shortaffil.role.attribute = attribute role { text }
+  db.shortaffil.attlist =
+    db.shortaffil.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.shortaffil =
+    
+    ## A brief description of an affiliation
+    element shortaffil { db.shortaffil.attlist, db._text }
+}
+div {
+  db.jobtitle.role.attribute = attribute role { text }
+  db.jobtitle.attlist =
+    db.jobtitle.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.jobtitle =
+    
+    ## The title of an individual in an organization
+    element jobtitle { db.jobtitle.attlist, db._text }
+}
+div {
+  db.orgname.class.enumeration =
+    
+    ## A consortium
+    "consortium"
+    | 
+      ## A corporation
+      "corporation"
+    | 
+      ## An informal organization
+      "informal"
+    | 
+      ## A non-profit organization
+      "nonprofit"
+  db.orgname.class-enum.attribute =
+    
+    ## Specifies the nature of the organization
+    attribute class { db.orgname.class.enumeration }
+  db.orgname.class-other.attributes =
+    
+    ## Specifies the nature of the organization
+    attribute class {
+      
+      ## Indicates a non-standard organization class
+      "other"
+    },
+    
+    ## Identifies the non-standard nature of the organization
+    attribute otherclass { text }
+  db.orgname.class.attribute =
+    db.orgname.class-enum.attribute | db.orgname.class-other.attributes
+  db.orgname.role.attribute = attribute role { text }
+  db.orgname.attlist =
+    db.orgname.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.orgname.class.attribute?
+  db.orgname =
+    
+    ## The name of an organization
+    element orgname { db.orgname.attlist, db._text }
+}
+div {
+  db.orgdiv.role.attribute = attribute role { text }
+  db.orgdiv.attlist =
+    db.orgdiv.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.orgdiv =
+    
+    ## A division of an organization
+    element orgdiv { db.orgdiv.attlist, db.all.inlines* }
+}
+div {
+  db.artpagenums.role.attribute = attribute role { text }
+  db.artpagenums.attlist =
+    db.artpagenums.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.artpagenums =
+    
+    ## The page numbers of an article as published
+    element artpagenums { db.artpagenums.attlist, db._text }
+}
+div {
+  db.personname.role.attribute = attribute role { text }
+  db.personname.attlist =
+    db.personname.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.personname =
+    
+    ## The personal name of an individual
+    element personname {
+      db.personname.attlist,
+      (db._text
+       | (db.honorific
+          | db.firstname
+          | db.surname
+          | db.lineage
+          | db.othername)+
+       | (db.honorific
+          | db.givenname
+          | db.surname
+          | db.lineage
+          | db.othername)+)
+    }
+}
+db.person.author.contentmodel =
+  db.personname,
+  (db.personblurb
+   | db.affiliation
+   | db.email
+   | db.uri
+   | db.address
+   | db.contrib)*
+db.org.author.contentmodel =
+  db.orgname,
+  (db.orgdiv
+   | db.affiliation
+   | db.email
+   | db.uri
+   | db.address
+   | db.contrib)*
+db.credit.contentmodel =
+  db.person.author.contentmodel | db.org.author.contentmodel
+div {
+  db.author.role.attribute = attribute role { text }
+  db.author.attlist =
+    db.author.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.author =
+    
+    ## The name of an individual author
+    element author { db.author.attlist, db.credit.contentmodel }
+}
+div {
+  db.authorgroup.role.attribute = attribute role { text }
+  db.authorgroup.attlist =
+    db.authorgroup.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.authorgroup =
+    
+    ## Wrapper for author information when a document has multiple authors or collaborators
+    element authorgroup {
+      db.authorgroup.attlist, (db.author | db.editor | db.othercredit)+
+    }
+}
+div {
+  db.collab.role.attribute = attribute role { text }
+  db.collab.attlist =
+    db.collab.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.collab =
+    
+    ## Identifies a collaborator
+    element collab {
+      db.collab.attlist,
+      (db.person | db.personname | db.org | db.orgname)+,
+      db.affiliation*
+    }
+}
+div {
+  db.authorinitials.role.attribute = attribute role { text }
+  db.authorinitials.attlist =
+    db.authorinitials.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.authorinitials =
+    
+    ## The initials or other short identifier for an author
+    element authorinitials { db.authorinitials.attlist, db._text }
+}
+div {
+  db.person.role.attribute = attribute role { text }
+  db.person.attlist =
+    db.person.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.person =
+    
+    ## A person and associated metadata
+    element person {
+      db.person.attlist,
+      db.personname,
+      (db.address
+       | db.affiliation
+       | db.email
+       | db.uri
+       | db.personblurb)*
+    }
+}
+div {
+  db.org.role.attribute = attribute role { text }
+  db.org.attlist =
+    db.org.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.org =
+    
+    ## An organization and associated metadata
+    element org {
+      db.org.attlist,
+      db.orgname,
+      (db.address | db.affiliation | db.email | db.uri | db.orgdiv)*
+    }
+}
+div {
+  db.confgroup.role.attribute = attribute role { text }
+  db.confgroup.attlist =
+    db.confgroup.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.confgroup =
+    
+    ## A wrapper for document meta-information about a conference
+    element confgroup {
+      db.confgroup.attlist,
+      (db.confdates
+       | db.conftitle
+       | db.confnum
+       | db.confsponsor
+       | db.address)*
+    }
+}
+div {
+  db.confdates.role.attribute = attribute role { text }
+  db.confdates.attlist =
+    db.confdates.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.confdates =
+    
+    ## The dates of a conference for which a document was written
+    element confdates { db.confdates.attlist, db._text }
+}
+div {
+  db.conftitle.role.attribute = attribute role { text }
+  db.conftitle.attlist =
+    db.conftitle.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.conftitle =
+    
+    ## The title of a conference for which a document was written
+    element conftitle { db.conftitle.attlist, db._text }
+}
+div {
+  db.confnum.role.attribute = attribute role { text }
+  db.confnum.attlist =
+    db.confnum.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.confnum =
+    
+    ## An identifier, frequently numerical, associated with a conference for which a document was written
+    element confnum { db.confnum.attlist, db._text }
+}
+div {
+  db.confsponsor.role.attribute = attribute role { text }
+  db.confsponsor.attlist =
+    db.confsponsor.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.confsponsor =
+    
+    ## The sponsor of a conference for which a document was written
+    element confsponsor { db.confsponsor.attlist, db._text }
+}
+div {
+  db.contractnum.role.attribute = attribute role { text }
+  db.contractnum.attlist =
+    db.contractnum.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.contractnum =
+    
+    ## The contract number of a document
+    element contractnum { db.contractnum.attlist, db._text }
+}
+div {
+  db.contractsponsor.role.attribute = attribute role { text }
+  db.contractsponsor.attlist =
+    db.contractsponsor.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.contractsponsor =
+    
+    ## The sponsor of a contract
+    element contractsponsor { db.contractsponsor.attlist, db._text }
+}
+div {
+  db.copyright.role.attribute = attribute role { text }
+  db.copyright.attlist =
+    db.copyright.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.copyright =
+    
+    ## Copyright information about a document
+    element copyright { db.copyright.attlist, db.year+, db.holder* }
+}
+div {
+  db.year.role.attribute = attribute role { text }
+  db.year.attlist =
+    db.year.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.year =
+    
+    ## The year of publication of a document
+    element year { db.year.attlist, db._text }
+}
+div {
+  db.holder.role.attribute = attribute role { text }
+  db.holder.attlist =
+    db.holder.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.holder =
+    
+    ## The name of the individual or organization that holds a copyright
+    element holder { db.holder.attlist, db._text }
+}
+db.cover.contentmodel =
+  (db.para.blocks
+   | db.extension.blocks
+   | db.list.blocks
+   | db.informal.blocks
+   | db.publishing.blocks
+   | db.graphic.blocks
+   | db.technical.blocks
+   | db.verbatim.blocks
+   | db.bridgehead
+   | db.remark
+   | db.revhistory)
+  | db.synopsis.blocks
+div {
+  db.cover.role.attribute = attribute role { text }
+  db.cover.attlist =
+    db.cover.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.cover =
+    
+    ## Additional content for the cover of a publication
+    element cover { db.cover.attlist, db.cover.contentmodel+ }
+}
+db.date.contentmodel =
+  xsd:date | xsd:dateTime | xsd:gYearMonth | xsd:gYear | text
+div {
+  db.date.role.attribute = attribute role { text }
+  db.date.attlist =
+    db.date.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.date =
+    
+    ## The date of publication or revision of a document
+    element date { db.date.attlist, db.date.contentmodel }
+}
+div {
+  db.edition.role.attribute = attribute role { text }
+  db.edition.attlist =
+    db.edition.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.edition =
+    
+    ## The name or number of an edition of a document
+    element edition { db.edition.attlist, db._text }
+}
+div {
+  db.editor.role.attribute = attribute role { text }
+  db.editor.attlist =
+    db.editor.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.editor =
+    
+    ## The name of the editor of a document
+    element editor { db.editor.attlist, db.credit.contentmodel }
+}
+div {
+  db.biblioid.role.attribute = attribute role { text }
+  db.biblioid.attlist =
+    db.biblioid.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.biblio.class.attribute
+  db.biblioid =
+    
+    ## An identifier for a document
+    element biblioid { db.biblioid.attlist, db._text }
+}
+div {
+  db.citebiblioid.role.attribute = attribute role { text }
+  db.citebiblioid.attlist =
+    db.citebiblioid.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.biblio.class.attribute
+  db.citebiblioid =
+    
+    ## A citation of a bibliographic identifier
+    element citebiblioid { db.citebiblioid.attlist, db._text }
+}
+div {
+  db.bibliosource.role.attribute = attribute role { text }
+  db.bibliosource.attlist =
+    db.bibliosource.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.biblio.class.attribute
+  db.bibliosource =
+    
+    ## The source of a document
+    element bibliosource { db.bibliosource.attlist, db._text }
+}
+div {
+  db.bibliorelation.type.enumeration =
+    
+    ## The described resource pre-existed the referenced resource, which is essentially the same intellectual content presented in another format
+    "hasformat"
+    | 
+      ## The described resource includes the referenced resource either physically or logically
+      "haspart"
+    | 
+      ## The described resource has a version, edition, or adaptation, namely, the referenced resource
+      "hasversion"
+    | 
+      ## The described resource is the same intellectual content of the referenced resource, but presented in another format
+      "isformatof"
+    | 
+      ## The described resource is a physical or logical part of the referenced resource
+      "ispartof"
+    | 
+      ## The described resource is referenced, cited, or otherwise pointed to by the referenced resource
+      "isreferencedby"
+    | 
+      ## The described resource is supplanted, displaced, or superceded by the referenced resource
+      "isreplacedby"
+    | 
+      ## The described resource is required by the referenced resource, either physically or logically
+      "isrequiredby"
+    | 
+      ## The described resource is a version, edition, or adaptation of the referenced resource; changes in version imply substantive changes in content rather than differences in format
+      "isversionof"
+    | 
+      ## The described resource references, cites, or otherwise points to the referenced resource
+      "references"
+    | 
+      ## The described resource supplants, displaces, or supersedes the referenced resource
+      "replaces"
+    | 
+      ## The described resource requires the referenced resource to support its function, delivery, or coherence of content
+      "requires"
+  db.bibliorelation.type-enum.attribute =
+    
+    ## Identifies the type of relationship
+    attribute type { db.bibliorelation.type.enumeration }?
+  db.bibliorelation.type-other.attributes =
+    
+    ## Identifies the type of relationship
+    attribute type {
+      
+      ## The described resource has a non-standard relationship with the referenced resource
+      "othertype"
+    }?,
+    
+    ## A keyword that identififes the type of the non-standard relationship
+    attribute othertype { xsd:NMTOKEN }
+  db.bibliorelation.type.attribute =
+    db.bibliorelation.type-enum.attribute
+    | db.bibliorelation.type-other.attributes
+  db.bibliorelation.role.attribute = attribute role { text }
+  db.bibliorelation.attlist =
+    db.bibliorelation.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.biblio.class.attribute
+    & db.bibliorelation.type.attribute
+  db.bibliorelation =
+    
+    ## The relationship of a document to another
+    element bibliorelation { db.bibliorelation.attlist, db._text }
+}
+div {
+  db.bibliocoverage.spacial.enumeration =
+    
+    ## The DCMI Point identifies a point in space using its geographic coordinates
+    "dcmipoint"
+    | 
+      ## ISO 3166 Codes for the representation of names of countries
+      "iso3166"
+    | 
+      ## The DCMI Box identifies a region of space using its geographic limits
+      "dcmibox"
+    | 
+      ## The Getty Thesaurus of Geographic Names
+      "tgn"
+  db.bibliocoverage.spatial-enum.attribute =
+    
+    ## Specifies the type of spatial coverage
+    attribute spatial { db.bibliocoverage.spacial.enumeration }?
+  db.bibliocoverage.spatial-other.attributes =
+    
+    ## Specifies the type of spatial coverage
+    attribute spatial {
+      
+      ## Identifies a non-standard type of coverage
+      "otherspatial"
+    }?,
+    
+    ## A keyword that identifies the type of non-standard coverage
+    attribute otherspatial { xsd:NMTOKEN }
+  db.bibliocoverage.spatial.attribute =
+    db.bibliocoverage.spatial-enum.attribute
+    | db.bibliocoverage.spatial-other.attributes
+  db.bibliocoverage.temporal.enumeration =
+    
+    ## A specification of the limits of a time interval
+    "dcmiperiod"
+    | 
+      ## W3C Encoding rules for dates and times—a profile based on ISO 8601
+      "w3c-dtf"
+  db.bibliocoverage.temporal-enum.attribute =
+    
+    ## Specifies the type of temporal coverage
+    attribute temporal { db.bibliocoverage.temporal.enumeration }?
+  db.bibliocoverage.temporal-other.attributes =
+    
+    ## Specifies the type of temporal coverage
+    attribute temporal {
+      
+      ## Specifies a non-standard type of coverage
+      "othertemporal"
+    }?,
+    
+    ## A keyword that identifies the type of non-standard coverage
+    attribute othertemporal { xsd:NMTOKEN }
+  db.bibliocoverage.temporal.attribute =
+    db.bibliocoverage.temporal-enum.attribute
+    | db.bibliocoverage.temporal-other.attributes
+  db.bibliocoverage.coverage.attrib =
+    db.bibliocoverage.spatial.attribute
+    & db.bibliocoverage.temporal.attribute
+  db.bibliocoverage.role.attribute = attribute role { text }
+  db.bibliocoverage.attlist =
+    db.bibliocoverage.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.bibliocoverage.coverage.attrib
+  db.bibliocoverage =
+    
+    ## The spatial or temporal coverage of a document
+    element bibliocoverage { db.bibliocoverage.attlist, db._text }
+}
+div {
+  db.legalnotice.role.attribute = attribute role { text }
+  db.legalnotice.attlist =
+    db.legalnotice.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.legalnotice.info = db._info.title.only
+  db.legalnotice =
+    
+    ## A statement of legal obligations or requirements
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:legalnotice"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element legalnotice {
+      db.legalnotice.attlist, db.legalnotice.info, db.all.blocks+
+    }
+}
+div {
+  db.othercredit.class.enumeration =
+    
+    ## A copy editor
+    "copyeditor"
+    | 
+      ## A graphic designer
+      "graphicdesigner"
+    | 
+      ## Some other contributor
+      "other"
+    | 
+      ## A production editor
+      "productioneditor"
+    | 
+      ## A technical editor
+      "technicaleditor"
+    | 
+      ## A translator
+      "translator"
+    | 
+      ## An indexer
+      "indexer"
+    | 
+      ## A proof-reader
+      "proofreader"
+    | 
+      ## A cover designer
+      "coverdesigner"
+    | 
+      ## An interior designer
+      "interiordesigner"
+    | 
+      ## An illustrator
+      "illustrator"
+    | 
+      ## A reviewer
+      "reviewer"
+    | 
+      ## A typesetter
+      "typesetter"
+    | 
+      ## A converter (a persons responsible for conversion, not an application)
+      "conversion"
+  db.othercredit.class-enum.attribute =
+    
+    ## Identifies the nature of the contributor
+    attribute class { db.othercredit.class.enumeration }?
+  db.othercredit.class-other.attribute =
+    
+    ## Identifies the nature of the non-standard contribution
+    attribute otherclass { xsd:NMTOKEN }
+  db.othercredit.class-other.attributes =
+    
+    ## Identifies the nature of the contributor
+    attribute class {
+      
+      ## Identifies a non-standard contribution
+      "other"
+    }
+    & db.othercredit.class-other.attribute
+  db.othercredit.class.attribute =
+    db.othercredit.class-enum.attribute
+    | db.othercredit.class-other.attributes
+  db.othercredit.role.attribute = attribute role { text }
+  db.othercredit.attlist =
+    db.othercredit.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.othercredit.class.attribute
+  db.othercredit =
+    
+    ## A person or entity, other than an author or editor, credited in a document
+    element othercredit {
+      db.othercredit.attlist, db.credit.contentmodel
+    }
+}
+div {
+  db.pagenums.role.attribute = attribute role { text }
+  db.pagenums.attlist =
+    db.pagenums.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.pagenums =
+    
+    ## The numbers of the pages in a book, for use in a bibliographic entry
+    element pagenums { db.pagenums.attlist, db._text }
+}
+div {
+  db.contrib.role.attribute = attribute role { text }
+  db.contrib.attlist =
+    db.contrib.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.contrib =
+    
+    ## A summary of the contributions made to a document by a credited source
+    element contrib { db.contrib.attlist, db.all.inlines* }
+}
+div {
+  db.honorific.role.attribute = attribute role { text }
+  db.honorific.attlist =
+    db.honorific.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.honorific =
+    
+    ## The title of a person
+    element honorific { db.honorific.attlist, db._text }
+}
+div {
+  db.firstname.role.attribute = attribute role { text }
+  db.firstname.attlist =
+    db.firstname.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.firstname =
+    
+    ## A given name of a person
+    element firstname { db.firstname.attlist, db._text }
+}
+div {
+  db.givenname.role.attribute = attribute role { text }
+  db.givenname.attlist =
+    db.givenname.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.givenname =
+    
+    ## The given name of a person
+    element givenname { db.givenname.attlist, db._text }
+}
+div {
+  db.surname.role.attribute = attribute role { text }
+  db.surname.attlist =
+    db.surname.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.surname =
+    
+    ## An inherited or family name; in western cultures the last name
+    element surname { db.surname.attlist, db._text }
+}
+div {
+  db.lineage.role.attribute = attribute role { text }
+  db.lineage.attlist =
+    db.lineage.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.lineage =
+    
+    ## The portion of a person's name indicating a relationship to ancestors
+    element lineage { db.lineage.attlist, db._text }
+}
+div {
+  db.othername.role.attribute = attribute role { text }
+  db.othername.attlist =
+    db.othername.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.othername =
+    
+    ## A component of a person's name that is not a first name, surname, or lineage
+    element othername { db.othername.attlist, db._text }
+}
+div {
+  db.printhistory.role.attribute = attribute role { text }
+  db.printhistory.attlist =
+    db.printhistory.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.printhistory =
+    
+    ## The printing history of a document
+    element printhistory { db.printhistory.attlist, db.para.blocks+ }
+}
+div {
+  db.pubdate.role.attribute = attribute role { text }
+  db.pubdate.attlist =
+    db.pubdate.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.pubdate =
+    
+    ## The date of publication of a document
+    element pubdate { db.pubdate.attlist, db.date.contentmodel }
+}
+div {
+  db.publisher.role.attribute = attribute role { text }
+  db.publisher.attlist =
+    db.publisher.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.publisher =
+    
+    ## The publisher of a document
+    element publisher {
+      db.publisher.attlist, db.publishername, db.address*
+    }
+}
+div {
+  db.publishername.role.attribute = attribute role { text }
+  db.publishername.attlist =
+    db.publishername.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.publishername =
+    
+    ## The name of the publisher of a document
+    element publishername { db.publishername.attlist, db._text }
+}
+div {
+  db.releaseinfo.role.attribute = attribute role { text }
+  db.releaseinfo.attlist =
+    db.releaseinfo.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.releaseinfo =
+    
+    ## Information about a particular release of a document
+    element releaseinfo { db.releaseinfo.attlist, db._text }
+}
+div {
+  db.revhistory.role.attribute = attribute role { text }
+  db.revhistory.attlist =
+    db.revhistory.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.revhistory.info = db._info.title.only
+  db.revhistory =
+    
+    ## A history of the revisions to a document
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:revhistory"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element revhistory {
+      db.revhistory.attlist, db.revhistory.info, db.revision+
+    }
+}
+div {
+  db.revision.role.attribute = attribute role { text }
+  db.revision.attlist =
+    db.revision.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.revision =
+    
+    ## An entry describing a single revision in the history of the revisions to a document
+    element revision {
+      db.revision.attlist,
+      db.revnumber?,
+      db.date,
+      (db.authorinitials | db.author)*,
+      (db.revremark | db.revdescription)?
+    }
+}
+div {
+  db.revnumber.role.attribute = attribute role { text }
+  db.revnumber.attlist =
+    db.revnumber.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.revnumber =
+    
+    ## A document revision number
+    element revnumber { db.revnumber.attlist, db._text }
+}
+div {
+  db.revremark.role.attribute = attribute role { text }
+  db.revremark.attlist =
+    db.revremark.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.revremark =
+    
+    ## A description of a revision to a document
+    element revremark { db.revremark.attlist, db._text }
+}
+div {
+  db.revdescription.role.attribute = attribute role { text }
+  db.revdescription.attlist =
+    db.revdescription.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.revdescription =
+    
+    ## A extended description of a revision to a document
+    element revdescription { db.revdescription.attlist, db.all.blocks* }
+}
+div {
+  db.seriesvolnums.role.attribute = attribute role { text }
+  db.seriesvolnums.attlist =
+    db.seriesvolnums.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.seriesvolnums =
+    
+    ## Numbers of the volumes in a series of books
+    element seriesvolnums { db.seriesvolnums.attlist, db._text }
+}
+div {
+  db.volumenum.role.attribute = attribute role { text }
+  db.volumenum.attlist =
+    db.volumenum.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.volumenum =
+    
+    ## The volume number of a document in a set (as of books in a set or articles in a journal)
+    element volumenum { db.volumenum.attlist, db._text }
+}
+div {
+  db.issuenum.role.attribute = attribute role { text }
+  db.issuenum.attlist =
+    db.issuenum.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.issuenum =
+    
+    ## The number of an issue of a journal
+    element issuenum { db.issuenum.attlist, db._text }
+}
+div {
+  db.package.role.attribute = attribute role { text }
+  db.package.attlist =
+    db.package.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.package =
+    
+    ## A software or application package
+    element package { db.package.attlist, db._text }
+}
+div {
+  db.email.role.attribute = attribute role { text }
+  db.email.attlist =
+    db.email.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.email =
+    
+    ## An email address
+    element email { db.email.attlist, db._text }
+}
+div {
+  db.lineannotation.role.attribute = attribute role { text }
+  db.lineannotation.attlist =
+    db.lineannotation.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.lineannotation =
+    
+    ## A comment on a line in a verbatim listing
+    element lineannotation { db.lineannotation.attlist, db._text }
+}
+div {
+  db.parameter.class.enumeration =
+    
+    ## A command
+    "command"
+    | 
+      ## A function
+      "function"
+    | 
+      ## An option
+      "option"
+  db.parameter.class.attribute =
+    
+    ## Identifies the class of parameter
+    attribute class { db.parameter.class.enumeration }
+  db.parameter.role.attribute = attribute role { text }
+  db.parameter.attlist =
+    db.parameter.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.parameter.class.attribute?
+  db.parameter =
+    
+    ## A value or a symbolic reference to a value
+    element parameter { db.parameter.attlist, db._text }
+}
+db.replaceable.inlines = db._text | db.co
+div {
+  db.replaceable.class.enumeration =
+    
+    ## A command
+    "command"
+    | 
+      ## A function
+      "function"
+    | 
+      ## An option
+      "option"
+    | 
+      ## A parameter
+      "parameter"
+  db.replaceable.class.attribute =
+    
+    ## Identifies the nature of the replaceable text
+    attribute class { db.replaceable.class.enumeration }
+  db.replaceable.role.attribute = attribute role { text }
+  db.replaceable.attlist =
+    db.replaceable.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.replaceable.class.attribute?
+  db.replaceable =
+    
+    ## Content that may or must be replaced by the user
+    element replaceable {
+      db.replaceable.attlist, db.replaceable.inlines*
+    }
+}
+div {
+  db.uri.type.attribute =
+    
+    ## Identifies the type of URI specified
+    attribute type { text }?
+  db.uri.role.attribute = attribute role { text }
+  db.uri.attlist =
+    db.uri.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.uri.type.attribute
+  db.uri =
+    
+    ## A Uniform Resource Identifier
+    element uri { db.uri.attlist, db._text }
+}
+div {
+  db.abbrev.role.attribute = attribute role { text }
+  db.abbrev.attlist =
+    db.abbrev.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.abbrev =
+    
+    ## An abbreviation, especially one followed by a period
+    element abbrev {
+      db.abbrev.attlist,
+      (db._text | db.superscript | db.subscript | db.trademark)*
+    }
+}
+div {
+  db.acronym.role.attribute = attribute role { text }
+  db.acronym.attlist =
+    db.acronym.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.acronym =
+    
+    ## An often pronounceable word made from the initial (or selected) letters of a name or phrase
+    element acronym {
+      db.acronym.attlist,
+      (db._text | db.superscript | db.subscript | db.trademark)*
+    }
+}
+div {
+  db.citation.role.attribute = attribute role { text }
+  db.citation.attlist =
+    db.citation.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.citation =
+    
+    ## An inline bibliographic reference to another published work
+    element citation { db.citation.attlist, db.all.inlines* }
+}
+div {
+  db.citerefentry.role.attribute = attribute role { text }
+  db.citerefentry.attlist =
+    db.citerefentry.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.citerefentry =
+    
+    ## A citation to a reference page
+    element citerefentry {
+      db.citerefentry.attlist, db.refentrytitle, db.manvolnum?
+    }
+}
+div {
+  db.refentrytitle.role.attribute = attribute role { text }
+  db.refentrytitle.attlist =
+    db.refentrytitle.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.refentrytitle =
+    
+    ## The title of a reference page
+    element refentrytitle { db.refentrytitle.attlist, db.all.inlines* }
+}
+div {
+  db.manvolnum.role.attribute = attribute role { text }
+  db.manvolnum.attlist =
+    db.manvolnum.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.manvolnum =
+    
+    ## A reference volume number
+    element manvolnum { db.manvolnum.attlist, db._text }
+}
+div {
+  db.citetitle.pubwork.enumeration =
+    
+    ## An article
+    "article"
+    | 
+      ## A bulletin board system
+      "bbs"
+    | 
+      ## A book
+      "book"
+    | 
+      ## A CD-ROM
+      "cdrom"
+    | 
+      ## A chapter (as of a book)
+      "chapter"
+    | 
+      ## A DVD
+      "dvd"
+    | 
+      ## An email message
+      "emailmessage"
+    | 
+      ## A gopher page
+      "gopher"
+    | 
+      ## A journal
+      "journal"
+    | 
+      ## A manuscript
+      "manuscript"
+    | 
+      ## A posting to a newsgroup
+      "newsposting"
+    | 
+      ## A part (as of a book)
+      "part"
+    | 
+      ## A reference entry
+      "refentry"
+    | 
+      ## A section (as of a book or article)
+      "section"
+    | 
+      ## A series
+      "series"
+    | 
+      ## A set (as of books)
+      "set"
+    | 
+      ## A web page
+      "webpage"
+    | 
+      ## A wiki page
+      "wiki"
+  db.citetitle.pubwork.attribute =
+    
+    ## Identifies the nature of the publication being cited
+    attribute pubwork { db.citetitle.pubwork.enumeration }
+  db.citetitle.role.attribute = attribute role { text }
+  db.citetitle.attlist =
+    db.citetitle.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.citetitle.pubwork.attribute?
+  db.citetitle =
+    
+    ## The title of a cited work
+    element citetitle { db.citetitle.attlist, db.all.inlines* }
+}
+div {
+  db.emphasis.role.attribute = attribute role { text }
+  db.emphasis.attlist =
+    db.emphasis.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.emphasis =
+    
+    ## Emphasized text
+    element emphasis { db.emphasis.attlist, db.all.inlines* }
+}
+div {
+  db._emphasis =
+    
+    ## A limited span of emphasized text
+    element emphasis { db.emphasis.attlist, db._text }
+}
+div {
+  db.foreignphrase.role.attribute = attribute role { text }
+  db.foreignphrase.attlist =
+    db.foreignphrase.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.foreignphrase =
+    
+    ## A word or phrase in a language other than the primary language of the document
+    element foreignphrase {
+      db.foreignphrase.attlist, (text | db.general.inlines)*
+    }
+}
+div {
+  db._foreignphrase.role.attribute = attribute role { text }
+  db._foreignphrase.attlist =
+    db._foreignphrase.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db._foreignphrase =
+    
+    ## A limited word or phrase in a language other than the primary language of the document
+    element foreignphrase { db._foreignphrase.attlist, db._text }
+}
+div {
+  db.phrase.role.attribute = attribute role { text }
+  db.phrase.attlist =
+    db.phrase.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.phrase =
+    
+    ## A span of text
+    element phrase { db.phrase.attlist, db.all.inlines* }
+}
+div {
+  db._phrase =
+    
+    ## A limited span of text
+    element phrase { db.phrase.attlist, db._text }
+}
+div {
+  db.quote.role.attribute = attribute role { text }
+  db.quote.attlist =
+    db.quote.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.quote =
+    
+    ## An inline quotation
+    element quote { db.quote.attlist, db.all.inlines* }
+}
+div {
+  db._quote.role.attribute = attribute role { text }
+  db._quote.attlist =
+    db._quote.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db._quote =
+    
+    ## A limited inline quotation
+    element quote { db._quote.attlist, db._text }
+}
+div {
+  db.subscript.role.attribute = attribute role { text }
+  db.subscript.attlist =
+    db.subscript.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.subscript =
+    
+    ## A subscript (as in H2
+    ## O, the molecular formula for water)
+    element subscript { db.subscript.attlist, db._text }
+}
+div {
+  db.superscript.role.attribute = attribute role { text }
+  db.superscript.attlist =
+    db.superscript.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.superscript =
+    
+    ## A superscript (as in x2
+    ## , the mathematical notation for x multiplied by itself)
+    element superscript { db.superscript.attlist, db._text }
+}
+div {
+  db.trademark.class.enumeration =
+    
+    ## A copyright
+    "copyright"
+    | 
+      ## A registered copyright
+      "registered"
+    | 
+      ## A service
+      "service"
+    | 
+      ## A trademark
+      "trade"
+  db.trademark.class.attribute =
+    
+    ## Identifies the class of trade mark
+    attribute class { db.trademark.class.enumeration }
+  db.trademark.role.attribute = attribute role { text }
+  db.trademark.attlist =
+    db.trademark.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.trademark.class.attribute?
+  db.trademark =
+    
+    ## A trademark
+    element trademark { db.trademark.attlist, db._text }
+}
+div {
+  db.wordasword.role.attribute = attribute role { text }
+  db.wordasword.attlist =
+    db.wordasword.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.wordasword =
+    
+    ## A word meant specifically as a word and not representing anything else
+    element wordasword { db.wordasword.attlist, db._text }
+}
+div {
+  db.footnoteref.role.attribute = attribute role { text }
+  db.footnoteref.label.attribute = db.label.attribute
+  db.footnoteref.attlist =
+    db.footnoteref.role.attribute?
+    & db.common.attributes
+    & db.linkend.attribute
+    & db.footnoteref.label.attribute?
+  db.footnoteref =
+    
+    ## A cross reference to a footnote (a footnote mark)
+    [
+      s:pattern [
+        name = "Footnote reference type constraint"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:footnoteref"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test =
+              "local-name(//*[@xml:id=current()/@linkend]) = 'footnote' and namespace-uri(//*[@xml:id=current()/@linkend]) = 'http://docbook.org/ns/docbook'"
+            "@linkend on footnoteref must point to a footnote."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element footnoteref { db.footnoteref.attlist, empty }
+}
+div {
+  db.xref.role.attribute = attribute role { text }
+  db.xref.xrefstyle.attribute = db.xrefstyle.attribute
+  db.xref.endterm.attribute = db.endterm.attribute
+  db.xref.attlist =
+    db.xref.role.attribute?
+    & db.common.attributes
+    & db.common.req.linking.attributes
+    & db.xref.xrefstyle.attribute?
+    & db.xref.endterm.attribute?
+  db.xref =
+    
+    ## A cross reference to another part of the document
+    element xref { db.xref.attlist, empty }
+}
+div {
+  db.link.role.attribute = attribute role { text }
+  db.link.xrefstyle.attribute = db.xrefstyle.attribute
+  db.link.endterm.attribute = db.endterm.attribute
+  db.link.attlist =
+    db.link.role.attribute?
+    & db.common.attributes
+    & db.common.req.linking.attributes
+    & db.link.xrefstyle.attribute?
+    & db.link.endterm.attribute?
+  db.link =
+    
+    ## A hypertext link
+    element link { db.link.attlist, db.all.inlines* }
+}
+div {
+  db.olink.role.attribute = attribute role { text }
+  db.olink.xrefstyle.attribute = db.xrefstyle.attribute
+  db.olink.localinfo.attribute =
+    
+    ## Holds additional information that may be used by the application when resolving the link
+    attribute localinfo { text }
+  db.olink.targetdoc.attribute =
+    
+    ## Specifies the URI of the document in which the link target appears
+    attribute targetdoc { xsd:anyURI }
+  db.olink.targetptr.attribute =
+    
+    ## Specifies the location of the link target in the document
+    attribute targetptr { text }
+  db.olink.type.attribute =
+    
+    ## Identifies application-specific customization of the link behavior
+    attribute type { text }
+  db.olink.attlist =
+    db.common.attributes
+    & db.olink.targetdoc.attribute?
+    & db.olink.role.attribute?
+    & db.olink.xrefstyle.attribute?
+    & db.olink.localinfo.attribute?
+    & db.olink.targetptr.attribute?
+    & db.olink.type.attribute?
+  db.olink =
+    
+    ## A link that addresses its target indirectly
+    element olink { db.olink.attlist, db.all.inlines* }
+}
+div {
+  db.anchor.role.attribute = attribute role { text }
+  db.anchor.attlist =
+    db.anchor.role.attribute? & db.common.idreq.attributes
+  db.anchor =
+    
+    ## A spot in the document
+    element anchor { db.anchor.attlist, empty }
+}
+div {
+  db.alt.role.attribute = attribute role { text }
+  db.alt.attlist = db.alt.role.attribute? & db.common.attributes
+  db.alt =
+    
+    ## A text-only annotation, often used for accessibility
+    element alt { db.alt.attlist, (text | db.inlinemediaobject)* }
+}
+db.status.attribute =
+  
+  ## Identifies the editorial or publication status of the element on which it occurs
+  attribute status { text }
+db.toplevel.sections =
+  ((db.section+, db.simplesect*) | db.simplesect+)
+  | (db.sect1+, db.simplesect*)
+  | db.refentry+
+db.toplevel.blocks.or.sections =
+  (db.all.blocks+, db.toplevel.sections?) | db.toplevel.sections
+db.recursive.sections =
+  ((db.section+, db.simplesect*) | db.simplesect+)
+  | db.refentry+
+db.recursive.blocks.or.sections =
+  (db.all.blocks+, db.recursive.sections?) | db.recursive.sections
+db.divisions = db.part | db.reference
+db.components =
+  db.dedication
+  | db.acknowledgements
+  | db.preface
+  | db.chapter
+  | db.appendix
+  | db.article
+  | db.colophon
+db.navigation.components =
+  notAllowed | db.glossary | db.bibliography | db.index | db.toc
+db.component.contentmodel =
+  db.navigation.components*,
+  db.toplevel.blocks.or.sections,
+  db.navigation.components*
+db.setindex.components = notAllowed | db.setindex
+db.toc.components = notAllowed | db.toc
+db.set.components = db.set | db.book
+div {
+  db.set.status.attribute = db.status.attribute
+  db.set.role.attribute = attribute role { text }
+  db.set.attlist =
+    db.set.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.label.attribute?
+    & db.set.status.attribute?
+  db.set.info = db._info.title.req
+  db.set =
+    
+    ## A collection of books
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:set"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element set {
+      db.set.attlist,
+      db.set.info,
+      db.toc.components?,
+      db.set.components+,
+      db.setindex.components?
+    }
+}
+db.book.components =
+  (db.navigation.components | db.components | db.divisions)* | db.topic*
+div {
+  db.book.status.attribute = db.status.attribute
+  db.book.role.attribute = attribute role { text }
+  db.book.attlist =
+    db.book.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.label.attribute?
+    & db.book.status.attribute?
+  db.book.info = db._info
+  db.book =
+    
+    ## A book
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:book"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element book { db.book.attlist, db.book.info, db.book.components }
+}
+div {
+  db.dedication.status.attribute = db.status.attribute
+  db.dedication.role.attribute = attribute role { text }
+  db.dedication.attlist =
+    db.dedication.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.label.attribute?
+    & db.dedication.status.attribute?
+  db.dedication.info = db._info
+  db.dedication =
+    
+    ## The dedication of a book or other component
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:dedication"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element dedication {
+      db.dedication.attlist, db.dedication.info, db.all.blocks+
+    }
+}
+div {
+  db.acknowledgements.status.attribute = db.status.attribute
+  db.acknowledgements.role.attribute = attribute role { text }
+  db.acknowledgements.attlist =
+    db.acknowledgements.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.label.attribute?
+    & db.acknowledgements.status.attribute?
+  db.acknowledgements.info = db._info
+  db.acknowledgements =
+    
+    ## Acknowledgements of a book or other component
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:acknowledgements"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element acknowledgements {
+      db.acknowledgements.attlist,
+      db.acknowledgements.info,
+      db.all.blocks+
+    }
+}
+div {
+  db.colophon.status.attribute = db.status.attribute
+  db.colophon.role.attribute = attribute role { text }
+  db.colophon.attlist =
+    db.colophon.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.label.attribute?
+    & db.colophon.status.attribute?
+  db.colophon.info = db._info
+  db.colophon =
+    
+    ## Text at the back of a book describing facts about its production
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:colophon"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element colophon {
+      db.colophon.attlist,
+      db.colophon.info,
+      ((db.all.blocks+, db.simplesect*)
+       | (db.all.blocks*, db.simplesect+))
+    }
+}
+db.appendix.contentmodel = db.component.contentmodel | db.topic+
+div {
+  db.appendix.status.attribute = db.status.attribute
+  db.appendix.role.attribute = attribute role { text }
+  db.appendix.attlist =
+    db.appendix.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.label.attribute?
+    & db.appendix.status.attribute?
+  db.appendix.info = db._info.title.req
+  db.appendix =
+    
+    ## An appendix in a book or article
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:appendix"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element appendix {
+      db.appendix.attlist, db.appendix.info, db.appendix.contentmodel?
+    }
+}
+db.chapter.contentmodel = db.component.contentmodel | db.topic+
+div {
+  db.chapter.status.attribute = db.status.attribute
+  db.chapter.role.attribute = attribute role { text }
+  db.chapter.attlist =
+    db.chapter.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.label.attribute?
+    & db.chapter.status.attribute?
+  db.chapter.info = db._info.title.req
+  db.chapter =
+    
+    ## A chapter, as of a book
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:chapter"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element chapter {
+      db.chapter.attlist, db.chapter.info, db.chapter.contentmodel?
+    }
+}
+db.part.components =
+  (db.navigation.components | db.components)
+  | (db.refentry | db.reference)
+db.part.contentmodel = db.part.components+ | db.topic+
+div {
+  db.part.status.attribute = db.status.attribute
+  db.part.role.attribute = attribute role { text }
+  db.part.attlist =
+    db.part.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.label.attribute?
+    & db.part.status.attribute?
+  db.part.info = db._info.title.req
+  db.part =
+    
+    ## A division in a book
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:part"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element part {
+      db.part.attlist,
+      db.part.info,
+      db.partintro?,
+      db.part.contentmodel?
+    }
+}
+div {
+  db.preface.status.attribute = db.status.attribute
+  db.preface.role.attribute = attribute role { text }
+  db.preface.attlist =
+    db.preface.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.label.attribute?
+    & db.preface.status.attribute?
+  db.preface.info = db._info.title.req
+  db.preface =
+    
+    ## Introductory matter preceding the first chapter of a book
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:preface"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element preface {
+      db.preface.attlist, db.preface.info, db.component.contentmodel?
+    }
+}
+div {
+  db.partintro.status.attribute = db.status.attribute
+  db.partintro.role.attribute = attribute role { text }
+  db.partintro.attlist =
+    db.partintro.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.label.attribute?
+    & db.partintro.status.attribute?
+  db.partintro.info = db._info
+  db.partintro =
+    
+    ## An introduction to the contents of a part
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:partintro"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element partintro {
+      db.partintro.attlist,
+      db.partintro.info,
+      db.toplevel.blocks.or.sections?
+    }
+}
+div {
+  db.section.status.attribute = db.status.attribute
+  db.section.role.attribute = attribute role { text }
+  db.section.attlist =
+    db.section.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.label.attribute?
+    & db.section.status.attribute?
+  db.section.info = db._info.title.req
+  db.section =
+    
+    ## A recursive section
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:section"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element section {
+      db.section.attlist,
+      db.section.info,
+      db.recursive.blocks.or.sections?,
+      db.navigation.components*
+    }
+}
+div {
+  db.simplesect.status.attribute = db.status.attribute
+  db.simplesect.role.attribute = attribute role { text }
+  db.simplesect.attlist =
+    db.simplesect.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.label.attribute?
+    & db.simplesect.status.attribute?
+  db.simplesect.info = db._info.title.req
+  db.simplesect =
+    
+    ## A section of a document with no subdivisions
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:simplesect"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element simplesect {
+      db.simplesect.attlist, db.simplesect.info, db.all.blocks*
+    }
+}
+db.article.components = db.toplevel.sections
+db.article.navcomponents =
+  db.navigation.components
+  | db.acknowledgements
+  | db.dedication
+  | db.appendix
+  | db.colophon
+div {
+  db.article.status.attribute = db.status.attribute
+  db.article.class.enumeration =
+    
+    ## A collection of frequently asked questions.
+    "faq"
+    | 
+      ## An article in a journal or other periodical.
+      "journalarticle"
+    | 
+      ## A description of a product.
+      "productsheet"
+    | 
+      ## A specification.
+      "specification"
+    | 
+      ## A technical report.
+      "techreport"
+    | 
+      ## A white paper.
+      "whitepaper"
+  db.article.class.attribute =
+    
+    ## Identifies the nature of the article
+    attribute class { db.article.class.enumeration }
+  db.article.role.attribute = attribute role { text }
+  db.article.attlist =
+    db.article.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.label.attribute?
+    & db.article.status.attribute?
+    & db.article.class.attribute?
+  db.article.info = db._info.title.req
+  db.article =
+    
+    ## An article
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:article"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element article {
+      db.article.attlist,
+      db.article.info,
+      db.article.navcomponents*,
+      ((db.all.blocks+, db.article.components?)
+       | db.article.components),
+      db.article.navcomponents*
+    }
+}
+db.annotations.attribute =
+  
+  ## Identifies one or more annotations that apply to this element
+  attribute annotations { text }
+div {
+  db.annotation.role.attribute = attribute role { text }
+  db.annotation.annotates.attribute =
+    
+    ## Identifies one ore more elements to which this annotation applies
+    attribute annotates { text }
+  db.annotation.attlist =
+    db.annotation.role.attribute?
+    & db.annotation.annotates.attribute?
+    & db.common.attributes
+  db.annotation.info = db._info.title.only
+  db.annotation =
+    
+    ## An annotation
+    [
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:annotation"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:annotation)"
+            "annotation must not occur among the children or descendants of annotation"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:annotation"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element annotation {
+      db.annotation.attlist, db.annotation.info, db.all.blocks+
+    }
+}
+db.xlink.extended.type.attribute =
+  
+  ## Identifies the XLink extended link type
+  [
+    s:pattern [
+      name = "XLink extended placement"
+      "\x{a}" ~
+      "            "
+      s:rule [
+        context = "*[@xlink:type='extended']"
+        "\x{a}" ~
+        "               "
+        s:assert [
+          test = "not(parent::*[@xlink:type='extended'])"
+          "An XLink extended type element may not occur as the direct child of an XLink extended type element."
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      "\x{a}" ~
+      "         "
+    ]
+  ]
+  attribute xlink:type {
+    
+    ## An XLink extended link type
+    "extended"
+  }
+db.xlink.locator.type.attribute =
+  
+  ## Identifies the XLink locator link type
+  [
+    s:pattern [
+      name = "XLink locator placement"
+      "\x{a}" ~
+      "            "
+      s:rule [
+        context = "*[@xlink:type='locator']"
+        "\x{a}" ~
+        "               "
+        s:assert [
+          test = "not(parent::*[@xlink:type='extended'])"
+          "An XLink locator type element must occur as the direct child of an XLink extended type element."
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      "\x{a}" ~
+      "         "
+    ]
+  ]
+  attribute xlink:type {
+    
+    ## An XLink locator link type
+    "locator"
+  }
+db.xlink.arc.type.attribute =
+  
+  ## Identifies the XLink arc link type
+  [
+    s:pattern [
+      name = "XLink arc placement"
+      "\x{a}" ~
+      "            "
+      s:rule [
+        context = "*[@xlink:type='arc']"
+        "\x{a}" ~
+        "               "
+        s:assert [
+          test = "parent::*[@xlink:type='extended']"
+          "An XLink arc type element must occur as the direct child of an XLink extended type element."
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      "\x{a}" ~
+      "         "
+    ]
+  ]
+  attribute xlink:type {
+    
+    ## An XLink arc link type
+    "arc"
+  }
+db.xlink.resource.type.attribute =
+  
+  ## Identifies the XLink resource link type
+  [
+    s:pattern [
+      name = "XLink resource placement"
+      "\x{a}" ~
+      "            "
+      s:rule [
+        context = "*[@xlink:type='resource']"
+        "\x{a}" ~
+        "               "
+        s:assert [
+          test = "not(parent::*[@xlink:type='extended'])"
+          "An XLink resource type element must occur as the direct child of an XLink extended type element."
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      "\x{a}" ~
+      "         "
+    ]
+  ]
+  attribute xlink:type {
+    
+    ## An XLink resource link type
+    "resource"
+  }
+db.xlink.title.type.attribute =
+  
+  ## Identifies the XLink title link type
+  [
+    s:pattern [
+      name = "XLink title placement"
+      "\x{a}" ~
+      "            "
+      s:rule [
+        context = "*[@xlink:type='title']"
+        "\x{a}" ~
+        "               "
+        s:assert [
+          test =
+            "not(parent::*[@xlink:type='extended']) and not(parent::*[@xlink:type='locator']) and not(parent::*[@xlink:type='arc'])"
+          "An XLink title type element must occur as the direct child of an XLink extended, locator, or arc type element."
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      "\x{a}" ~
+      "         "
+    ]
+  ]
+  attribute xlink:type {
+    
+    ## An XLink title link type
+    "title"
+  }
+db.xlink.extended.link.attributes =
+  db.xlink.extended.type.attribute
+  & db.xlink.role.attribute?
+  & db.xlink.title.attribute?
+db.xlink.locator.link.attributes =
+  db.xlink.locator.type.attribute
+  & db.xlink.href.attribute
+  & db.xlink.role.attribute?
+  & db.xlink.title.attribute?
+  & db.xlink.label.attribute?
+db.xlink.arc.link.attributes =
+  db.xlink.arc.type.attribute
+  & db.xlink.arcrole.attribute?
+  & db.xlink.title.attribute?
+  & db.xlink.show.attribute?
+  & db.xlink.actuate.attribute?
+  & db.xlink.from.attribute?
+  & db.xlink.to.attribute?
+db.xlink.resource.link.attributes =
+  db.xlink.resource.type.attribute
+  & db.xlink.role.attribute?
+  & db.xlink.title.attribute?
+  & db.xlink.label.attribute?
+db.xlink.title.link.attributes = db.xlink.title.type.attribute
+db.xlink.from.attribute =
+  
+  ## Specifies the XLink traversal-from
+  attribute xlink:from { xsd:NMTOKEN }
+db.xlink.label.attribute =
+  
+  ## Specifies the XLink label
+  attribute xlink:label { xsd:NMTOKEN }
+db.xlink.to.attribute =
+  
+  ## Specifies the XLink traversal-to
+  attribute xlink:to { xsd:NMTOKEN }
+div {
+  db.extendedlink.role.attribute = attribute role { text }
+  db.extendedlink.attlist =
+    db.extendedlink.role.attribute?
+    & db.common.attributes
+    & 
+      ## Identifies the XLink link type 
+      [ a:defaultValue = "extended" ]
+      attribute xlink:type {
+        
+        ## An XLink extended link
+        "extended"
+      }?
+    & db.xlink.role.attribute?
+    & db.xlink.title.attribute?
+  db.extendedlink =
+    
+    ## An XLink extended link
+    element extendedlink {
+      db.extendedlink.attlist, (db.locator | db.arc | db.link)+
+    }
+}
+div {
+  db.locator.role.attribute = attribute role { text }
+  db.locator.attlist =
+    db.locator.role.attribute?
+    & db.common.attributes
+    & 
+      ## Identifies the XLink link type 
+      [ a:defaultValue = "locator" ]
+      attribute xlink:type {
+        
+        ## An XLink locator link
+        "locator"
+      }?
+    & db.xlink.href.attribute
+    & db.xlink.role.attribute?
+    & db.xlink.title.attribute?
+    & db.xlink.label.attribute?
+  db.locator =
+    
+    ## An XLink locator in an extendedlink
+    element locator { db.locator.attlist, empty }
+}
+div {
+  db.arc.role.attribute = attribute role { text }
+  db.arc.attlist =
+    db.arc.role.attribute?
+    & db.common.attributes
+    & 
+      ## Identifies the XLink link type 
+      [ a:defaultValue = "arc" ]
+      attribute xlink:type {
+        
+        ## An XLink arc link
+        "arc"
+      }?
+    & db.xlink.arcrole.attribute?
+    & db.xlink.title.attribute?
+    & db.xlink.show.attribute?
+    & db.xlink.actuate.attribute?
+    & db.xlink.from.attribute?
+    & db.xlink.to.attribute?
+  db.arc =
+    
+    ## An XLink arc in an extendedlink
+    element arc { db.arc.attlist, empty }
+}
+db.sect1.sections = (db.sect2+, db.simplesect*) | db.simplesect+
+div {
+  db.sect1.status.attribute = db.status.attribute
+  db.sect1.role.attribute = attribute role { text }
+  db.sect1.attlist =
+    db.sect1.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.label.attribute?
+    & db.sect1.status.attribute?
+  db.sect1.info = db._info.title.req
+  db.sect1 =
+    
+    ## A top-level section of document
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:sect1"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element sect1 {
+      db.sect1.attlist,
+      db.sect1.info,
+      ((db.all.blocks+, db.sect1.sections?) | db.sect1.sections)?,
+      db.navigation.components*
+    }
+}
+db.sect2.sections = (db.sect3+, db.simplesect*) | db.simplesect+
+div {
+  db.sect2.status.attribute = db.status.attribute
+  db.sect2.role.attribute = attribute role { text }
+  db.sect2.attlist =
+    db.sect2.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.label.attribute?
+    & db.sect2.status.attribute?
+  db.sect2.info = db._info.title.req
+  db.sect2 =
+    
+    ## A subsection within a sect1
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:sect2"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element sect2 {
+      db.sect2.attlist,
+      db.sect2.info,
+      ((db.all.blocks+, db.sect2.sections?) | db.sect2.sections)?,
+      db.navigation.components*
+    }
+}
+db.sect3.sections = (db.sect4+, db.simplesect*) | db.simplesect+
+div {
+  db.sect3.status.attribute = db.status.attribute
+  db.sect3.role.attribute = attribute role { text }
+  db.sect3.attlist =
+    db.sect3.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.label.attribute?
+    & db.sect3.status.attribute?
+  db.sect3.info = db._info.title.req
+  db.sect3 =
+    
+    ## A subsection within a sect2
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:sect3"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element sect3 {
+      db.sect3.attlist,
+      db.sect3.info,
+      ((db.all.blocks+, db.sect3.sections?) | db.sect3.sections)?,
+      db.navigation.components*
+    }
+}
+db.sect4.sections = (db.sect5+, db.simplesect*) | db.simplesect+
+div {
+  db.sect4.status.attribute = db.status.attribute
+  db.sect4.role.attribute = attribute role { text }
+  db.sect4.attlist =
+    db.sect4.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.label.attribute?
+    & db.sect4.status.attribute?
+  db.sect4.info = db._info.title.req
+  db.sect4 =
+    
+    ## A subsection within a sect3
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:sect4"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element sect4 {
+      db.sect4.attlist,
+      db.sect4.info,
+      ((db.all.blocks+, db.sect4.sections?) | db.sect4.sections)?,
+      db.navigation.components*
+    }
+}
+db.sect5.sections = db.simplesect+
+div {
+  db.sect5.status.attribute = db.status.attribute
+  db.sect5.role.attribute = attribute role { text }
+  db.sect5.attlist =
+    db.sect5.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.label.attribute?
+    & db.sect5.status.attribute?
+  db.sect5.info = db._info.title.req
+  db.sect5 =
+    
+    ## A subsection within a sect4
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:sect5"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element sect5 {
+      db.sect5.attlist,
+      db.sect5.info,
+      ((db.all.blocks+, db.sect5.sections?) | db.sect5.sections)?,
+      db.navigation.components*
+    }
+}
+db.toplevel.refsection = db.refsection+ | db.refsect1+
+db.secondlevel.refsection = db.refsection+ | db.refsect2+
+db.reference.components = db.refentry
+div {
+  db.reference.status.attribute = db.status.attribute
+  db.reference.role.attribute = attribute role { text }
+  db.reference.attlist =
+    db.reference.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.reference.status.attribute?
+    & db.label.attribute?
+  db.reference.info = db._info.title.req
+  db.reference =
+    
+    ## A collection of reference entries
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:reference"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element reference {
+      db.reference.attlist,
+      db.reference.info,
+      db.partintro?,
+      db.reference.components*
+    }
+}
+div {
+  db.refentry.status.attribute = db.status.attribute
+  db.refentry.role.attribute = attribute role { text }
+  db.refentry.attlist =
+    db.refentry.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.refentry.status.attribute?
+    & db.label.attribute?
+  db.refentry.info = db._info.title.forbidden
+  db.refentry =
+    
+    ## A reference page (originally a UNIX man-style reference page)
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:refentry"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element refentry {
+      db.refentry.attlist,
+      db.indexterm*,
+      db.refentry.info,
+      db.refmeta?,
+      db.refnamediv+,
+      db.refsynopsisdiv?,
+      db.toplevel.refsection
+    }
+}
+div {
+  db.refmeta.role.attribute = attribute role { text }
+  db.refmeta.attlist =
+    db.refmeta.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.refmeta =
+    
+    ## Meta-information for a reference entry
+    element refmeta {
+      db.refmeta.attlist,
+      db.indexterm*,
+      db.refentrytitle,
+      db.manvolnum?,
+      db.refmiscinfo*,
+      db.indexterm*
+    }
+}
+db.refmiscinfo.class.enumeration =
+  
+  ## The name of the software product or component to which this topic applies
+  "source"
+  | 
+    ## The version of the software product or component to which this topic applies
+    "version"
+  | 
+    ## The section title of the reference page (e.g., User Commands)
+    "manual"
+  | 
+    ## The section title of the reference page (believed synonymous with "manual" but in wide use)
+    "sectdesc"
+  | 
+    ## The name of the software product or component to which this topic applies (e.g., SunOS x.y; believed synonymous with "source" but in wide use)
+    "software"
+db.refmiscinfo.class-enum.attribute =
+  
+  ## Identifies the kind of miscellaneous information
+  attribute class { db.refmiscinfo.class.enumeration }?
+db.refmiscinfo.class-other.attribute =
+  
+  ## Identifies the nature of non-standard miscellaneous information
+  attribute otherclass { text }
+db.refmiscinfo.class-other.attributes =
+  
+  ## Identifies the kind of miscellaneious information
+  attribute class {
+    
+    ## Indicates that the information is some 'other' kind.
+    "other"
+  }
+  & db.refmiscinfo.class-other.attribute
+db.refmiscinfo.class.attribute =
+  db.refmiscinfo.class-enum.attribute
+  | db.refmiscinfo.class-other.attributes
+div {
+  db.refmiscinfo.role.attribute = attribute role { text }
+  db.refmiscinfo.attlist =
+    db.refmiscinfo.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.refmiscinfo.class.attribute?
+  db.refmiscinfo =
+    
+    ## Meta-information for a reference entry other than the title and volume number
+    element refmiscinfo { db.refmiscinfo.attlist, db._text }
+}
+div {
+  db.refnamediv.role.attribute = attribute role { text }
+  db.refnamediv.attlist =
+    db.refnamediv.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.refnamediv =
+    
+    ## The name, purpose, and classification of a reference page
+    element refnamediv {
+      db.refnamediv.attlist,
+      db.refdescriptor?,
+      db.refname+,
+      db.refpurpose,
+      db.refclass*
+    }
+}
+div {
+  db.refdescriptor.role.attribute = attribute role { text }
+  db.refdescriptor.attlist =
+    db.refdescriptor.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.refdescriptor =
+    
+    ## A description of the topic of a reference page
+    element refdescriptor { db.refdescriptor.attlist, db.all.inlines* }
+}
+div {
+  db.refname.role.attribute = attribute role { text }
+  db.refname.attlist =
+    db.refname.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.refname =
+    
+    ## The name of (one of) the subject(s) of a reference page
+    element refname { db.refname.attlist, db.all.inlines* }
+}
+div {
+  db.refpurpose.role.attribute = attribute role { text }
+  db.refpurpose.attlist =
+    db.refpurpose.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.refpurpose =
+    
+    ## A short (one sentence) synopsis of the topic of a reference page
+    element refpurpose { db.refpurpose.attlist, db.all.inlines* }
+}
+div {
+  db.refclass.role.attribute = attribute role { text }
+  db.refclass.attlist =
+    db.refclass.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.refclass =
+    
+    ## The scope or other indication of applicability of a reference entry
+    element refclass { db.refclass.attlist, (text | db.application)* }
+}
+div {
+  db.refsynopsisdiv.role.attribute = attribute role { text }
+  db.refsynopsisdiv.attlist =
+    db.refsynopsisdiv.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.refsynopsisdiv.info = db._info
+  db.refsynopsisdiv =
+    
+    ## A syntactic synopsis of the subject of the reference page
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:refsynopsisdiv"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element refsynopsisdiv {
+      db.refsynopsisdiv.attlist,
+      db.refsynopsisdiv.info,
+      ((db.all.blocks+, db.secondlevel.refsection?)
+       | db.secondlevel.refsection)
+    }
+}
+div {
+  db.refsection.status.attribute = db.status.attribute
+  db.refsection.role.attribute = attribute role { text }
+  db.refsection.attlist =
+    db.refsection.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.refsection.status.attribute?
+    & db.label.attribute?
+  db.refsection.info = db._info.title.req
+  db.refsection =
+    
+    ## A recursive section in a refentry
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:refsection"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element refsection {
+      db.refsection.attlist,
+      db.refsection.info,
+      ((db.all.blocks+, db.refsection*) | db.refsection+)
+    }
+}
+db.refsect1.sections = db.refsect2+
+div {
+  db.refsect1.status.attribute = db.status.attribute
+  db.refsect1.role.attribute = attribute role { text }
+  db.refsect1.attlist =
+    db.refsect1.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.label.attribute?
+    & db.refsect1.status.attribute?
+  db.refsect1.info = db._info.title.req
+  db.refsect1 =
+    
+    ## A major subsection of a reference entry
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:refsect1"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element refsect1 {
+      db.refsect1.attlist,
+      db.refsect1.info,
+      ((db.all.blocks+, db.refsect1.sections?) | db.refsect1.sections)
+    }
+}
+db.refsect2.sections = db.refsect3+
+div {
+  db.refsect2.status.attribute = db.status.attribute
+  db.refsect2.role.attribute = attribute role { text }
+  db.refsect2.attlist =
+    db.refsect2.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.label.attribute?
+    & db.refsect2.status.attribute?
+  db.refsect2.info = db._info.title.req
+  db.refsect2 =
+    
+    ## A subsection of a refsect1
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:refsect2"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element refsect2 {
+      db.refsect2.attlist,
+      db.refsect2.info,
+      ((db.all.blocks+, db.refsect2.sections?) | db.refsect2.sections)
+    }
+}
+div {
+  db.refsect3.status.attribute = db.status.attribute
+  db.refsect3.role.attribute = attribute role { text }
+  db.refsect3.attlist =
+    db.refsect3.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.label.attribute?
+    & db.refsect3.status.attribute?
+  db.refsect3.info = db._info.title.req
+  db.refsect3 =
+    
+    ## A subsection of a refsect2
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:refsect3"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element refsect3 {
+      db.refsect3.attlist, db.refsect3.info, db.all.blocks+
+    }
+}
+db.glossary.inlines =
+  db.firstterm | db.glossterm | db._firstterm | db._glossterm
+db.baseform.attribute =
+  
+  ## Specifies the base form of the term, the one that appears in the glossary. This allows adjectival, plural, and other variations of the term to appear in the element. The element content is the default base form.
+  attribute baseform { text }?
+div {
+  db.glosslist.role.attribute = attribute role { text }
+  db.glosslist.attlist =
+    db.glosslist.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.glosslist.info = db._info.title.only
+  db.glosslist =
+    
+    ## A wrapper for a list of glossary entries
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:glosslist"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element glosslist {
+      db.glosslist.attlist,
+      db.glosslist.info?,
+      db.all.blocks*,
+      db.glossentry+
+    }
+}
+div {
+  db.glossentry.role.attribute = attribute role { text }
+  db.glossentry.sortas.attribute =
+    
+    ## Specifies the string by which the element's content is to be sorted; if unspecified, the content is used
+    attribute sortas { text }
+  db.glossentry.attlist =
+    db.glossentry.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.glossentry.sortas.attribute?
+  db.glossentry =
+    
+    ## An entry in a glossary or glosslist
+    element glossentry {
+      db.glossentry.attlist,
+      db.glossterm,
+      db.acronym?,
+      db.abbrev?,
+      db.indexterm*,
+      (db.glosssee | db.glossdef+)
+    }
+}
+div {
+  db.glossdef.role.attribute = attribute role { text }
+  db.glossdef.subject.attribute =
+    
+    ## Specifies a list of keywords for the definition
+    attribute subject { text }
+  db.glossdef.attlist =
+    db.glossdef.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.glossdef.subject.attribute?
+  db.glossdef =
+    
+    ## A definition in a glossentry
+    element glossdef {
+      db.glossdef.attlist, db.all.blocks+, db.glossseealso*
+    }
+}
+div {
+  db.glosssee.role.attribute = attribute role { text }
+  db.glosssee.otherterm.attribute =
+    
+    ## Identifies the other term
+    attribute otherterm { xsd:IDREF }
+  db.glosssee.attlist =
+    db.glosssee.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.glosssee.otherterm.attribute?
+  db.glosssee =
+    
+    ## A cross-reference from one glossentry
+    ##  to another
+    [
+      s:pattern [
+        name = "Glosssary 'see' type constraint"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:glosssee[@otherterm]"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test =
+              "local-name(//*[@xml:id=current()/@otherterm]) = 'glossentry' and namespace-uri(//*[@xml:id=current()/@otherterm]) = 'http://docbook.org/ns/docbook'"
+            "@otherterm on glosssee must point to a glossentry."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element glosssee { db.glosssee.attlist, db.all.inlines* }
+}
+div {
+  db.glossseealso.role.attribute = attribute role { text }
+  db.glossseealso.otherterm.attribute =
+    
+    ## Identifies the other term
+    attribute otherterm { xsd:IDREF }
+  db.glossseealso.attlist =
+    db.glossseealso.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.glossseealso.otherterm.attribute?
+  db.glossseealso =
+    
+    ## A cross-reference from one glossentry to another
+    [
+      s:pattern [
+        name = "Glossary 'seealso' type constraint"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:glossseealso[@otherterm]"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test =
+              "local-name(//*[@xml:id=current()/@otherterm]) = 'glossentry' and namespace-uri(//*[@xml:id=current()/@otherterm]) = 'http://docbook.org/ns/docbook'"
+            "@otherterm on glossseealso must point to a glossentry."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element glossseealso { db.glossseealso.attlist, db.all.inlines* }
+}
+div {
+  db.firstterm.role.attribute = attribute role { text }
+  db.firstterm.attlist =
+    db.firstterm.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.baseform.attribute
+  db.firstterm =
+    
+    ## The first occurrence of a term
+    [
+      s:pattern [
+        name = "Glossary 'firstterm' type constraint"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:firstterm[@linkend]"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test =
+              "local-name(//*[@xml:id=current()/@linkend]) = 'glossentry' and namespace-uri(//*[@xml:id=current()/@linkend]) = 'http://docbook.org/ns/docbook'"
+            "@linkend on firstterm must point to a glossentry."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element firstterm { db.firstterm.attlist, db.all.inlines* }
+}
+div {
+  db._firstterm.role.attribute = attribute role { text }
+  db._firstterm.attlist =
+    db._firstterm.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.baseform.attribute
+  db._firstterm =
+    
+    ## The first occurrence of a term, with limited content
+    [
+      s:pattern [
+        name = "Glossary 'firstterm' type constraint"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:firstterm[@linkend]"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test =
+              "local-name(//*[@xml:id=current()/@linkend]) = 'glossentry' and namespace-uri(//*[@xml:id=current()/@linkend]) = 'http://docbook.org/ns/docbook'"
+            "@linkend on firstterm must point to a glossentry."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element firstterm { db._firstterm.attlist, db._text }
+}
+div {
+  db.glossterm.role.attribute = attribute role { text }
+  db.glossterm.attlist =
+    db.glossterm.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.baseform.attribute
+  db.glossterm =
+    
+    ## A glossary term
+    [
+      s:pattern [
+        name = "Glossary 'glossterm' type constraint"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:glossterm[@linkend]"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test =
+              "local-name(//*[@xml:id=current()/@linkend]) = 'glossentry' and namespace-uri(//*[@xml:id=current()/@linkend]) = 'http://docbook.org/ns/docbook'"
+            "@linkend on glossterm must point to a glossentry."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element glossterm { db.glossterm.attlist, db.all.inlines* }
+}
+div {
+  db._glossterm.role.attribute = attribute role { text }
+  db._glossterm.attlist =
+    db._glossterm.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.baseform.attribute
+  db._glossterm =
+    
+    ## A glossary term
+    [
+      s:pattern [
+        name = "Glossary 'glossterm' type constraint"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:glossterm[@linkend]"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test =
+              "local-name(//*[@xml:id=current()/@linkend]) = 'glossentry' and namespace-uri(//*[@xml:id=current()/@linkend]) = 'http://docbook.org/ns/docbook'"
+            "@linkend on glossterm must point to a glossentry."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element glossterm { db._glossterm.attlist, db._text }
+}
+div {
+  db.glossary.status.attribute = db.status.attribute
+  db.glossary.role.attribute = attribute role { text }
+  db.glossary.attlist =
+    db.glossary.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.label.attribute?
+    & db.glossary.status.attribute?
+  db.glossary.info = db._info
+  db.glossary =
+    
+    ## A glossary
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:glossary"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element glossary {
+      db.glossary.attlist,
+      db.glossary.info,
+      db.all.blocks*,
+      (db.glossdiv* | db.glossentry*),
+      db.bibliography?
+    }
+}
+div {
+  db.glossdiv.status.attribute = db.status.attribute
+  db.glossdiv.role.attribute = attribute role { text }
+  db.glossdiv.attlist =
+    db.glossdiv.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.label.attribute?
+    & db.glossdiv.status.attribute?
+  db.glossdiv.info = db._info.title.req
+  db.glossdiv =
+    
+    ## A division in a glossary
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:glossdiv"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element glossdiv {
+      db.glossdiv.attlist,
+      db.glossdiv.info,
+      db.all.blocks*,
+      db.glossentry+
+    }
+}
+div {
+  db.termdef.role.attribute = attribute role { text }
+  db.termdef.attlist =
+    db.termdef.role.attribute?
+    & db.glossentry.sortas.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.baseform.attribute
+  db.termdef =
+    
+    ## An inline definition of a term
+    [
+      s:pattern [
+        name = "Glossary term definition constraint"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:termdef"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "count(db:firstterm) = 1"
+            "A termdef must contain exactly one firstterm"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element termdef { db.termdef.attlist, db.all.inlines* }
+}
+db.relation.attribute =
+  
+  ## Identifies the relationship between the bibliographic elemnts
+  attribute relation { text }
+div {
+  db.biblioentry.role.attribute = attribute role { text }
+  db.biblioentry.attlist =
+    db.biblioentry.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.biblioentry =
+    
+    ## A raw entry in a bibliography
+    element biblioentry {
+      db.biblioentry.attlist, db.bibliographic.elements+
+    }
+}
+div {
+  db.bibliomixed.role.attribute = attribute role { text }
+  db.bibliomixed.attlist =
+    db.bibliomixed.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.bibliomixed =
+    
+    ## A cooked entry in a bibliography
+    element bibliomixed {
+      db.bibliomixed.attlist,
+      ((db._text
+        | db.honorific
+        | db.firstname
+        | db.surname
+        | db.lineage
+        | db.othername
+        | db.bibliographic.elements)*
+       | (db._text
+          | db.honorific
+          | db.givenname
+          | db.surname
+          | db.lineage
+          | db.othername
+          | db.bibliographic.elements)*)
+    }
+}
+div {
+  db.biblioset.relation.attribute = db.relation.attribute
+  db.biblioset.role.attribute = attribute role { text }
+  db.biblioset.attlist =
+    db.biblioset.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.biblioset.relation.attribute?
+  db.biblioset =
+    
+    ## A raw container for related bibliographic information
+    element biblioset {
+      db.biblioset.attlist, db.bibliographic.elements+
+    }
+}
+div {
+  db.bibliomset.relation.attribute = db.relation.attribute
+  db.bibliomset.role.attribute = attribute role { text }
+  db.bibliomset.attlist =
+    db.bibliomset.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.bibliomset.relation.attribute?
+  db.bibliomset =
+    
+    ## A cooked container for related bibliographic information
+    element bibliomset {
+      db.bibliomset.attlist,
+      ((db._text
+        | db.honorific
+        | db.firstname
+        | db.surname
+        | db.lineage
+        | db.othername
+        | db.bibliographic.elements)*
+       | (db._text
+          | db.honorific
+          | db.givenname
+          | db.surname
+          | db.lineage
+          | db.othername
+          | db.bibliographic.elements)*)
+    }
+}
+div {
+  db.bibliomisc.role.attribute = attribute role { text }
+  db.bibliomisc.attlist =
+    db.bibliomisc.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.bibliomisc =
+    
+    ## Untyped bibliographic information
+    element bibliomisc { db.bibliomisc.attlist, db._text }
+}
+div {
+  db.bibliography.status.attrib = db.status.attribute
+  db.bibliography.role.attribute = attribute role { text }
+  db.bibliography.attlist =
+    db.bibliography.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.label.attribute?
+    & db.bibliography.status.attrib?
+  db.bibliography.info = db._info
+  db.bibliography =
+    
+    ## A bibliography
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:bibliography"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element bibliography {
+      db.bibliography.attlist,
+      db.bibliography.info,
+      db.all.blocks*,
+      (db.bibliodiv+ | (db.biblioentry | db.bibliomixed)+)
+    }
+}
+div {
+  db.bibliodiv.status.attrib = db.status.attribute
+  db.bibliodiv.role.attribute = attribute role { text }
+  db.bibliodiv.attlist =
+    db.bibliodiv.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.label.attribute?
+    & db.bibliodiv.status.attrib?
+  db.bibliodiv.info = db._info.title.req
+  db.bibliodiv =
+    
+    ## A section of a bibliography
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:bibliodiv"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element bibliodiv {
+      db.bibliodiv.attlist,
+      db.bibliodiv.info,
+      db.all.blocks*,
+      (db.biblioentry | db.bibliomixed)+
+    }
+}
+div {
+  db.bibliolist.role.attribute = attribute role { text }
+  db.bibliolist.attlist =
+    db.bibliolist.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.bibliolist.info = db._info.title.only
+  db.bibliolist =
+    
+    ## A wrapper for a list of bibliography entries
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:bibliolist"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element bibliolist {
+      db.bibliolist.attlist,
+      db.bibliolist.info?,
+      db.all.blocks*,
+      (db.biblioentry | db.bibliomixed)+
+    }
+}
+div {
+  db.biblioref.role.attribute = attribute role { text }
+  db.biblioref.xrefstyle.attribute = db.xrefstyle.attribute
+  db.biblioref.endterm.attribute = db.endterm.attribute
+  db.biblioref.units.attribute =
+    
+    ## The units (for example, pages) used to identify the beginning and ending of a reference.
+    attribute units { xsd:token }
+  db.biblioref.begin.attribute =
+    
+    ## Identifies the beginning of a reference; the location within the work that is being referenced.
+    attribute begin { xsd:token }
+  db.biblioref.end.attribute =
+    
+    ## Identifies the end of a reference.
+    attribute end { xsd:token }
+  db.biblioref.attlist =
+    db.biblioref.role.attribute?
+    & db.common.attributes
+    & db.common.req.linking.attributes
+    & db.biblioref.xrefstyle.attribute?
+    & db.biblioref.endterm.attribute?
+    & db.biblioref.units.attribute?
+    & db.biblioref.begin.attribute?
+    & db.biblioref.end.attribute?
+  db.biblioref =
+    
+    ## A cross-reference to a bibliographic entry
+    element biblioref { db.biblioref.attlist, empty }
+}
+db.significance.enumeration =
+  
+  ## Normal
+  "normal"
+  | 
+    ## Preferred
+    "preferred"
+db.significance.attribute =
+  
+  ## Specifies the significance of the term
+  attribute significance { db.significance.enumeration }
+db.zone.attribute =
+  
+  ## Specifies the IDs of the elements to which this term applies
+  attribute zone { xsd:IDREFS }
+db.indexterm.pagenum.attribute =
+  
+  ## Indicates the page on which this index term occurs in some version of the printed document
+  attribute pagenum { text }
+db.scope.enumeration =
+  
+  ## All indexes
+  "all"
+  | 
+    ## The global index (as for a combined index of a set of books)
+    "global"
+  | 
+    ## The local index (the index for this document only)
+    "local"
+db.scope.attribute =
+  
+  ## Specifies the scope of the index term
+  attribute scope { db.scope.enumeration }
+db.sortas.attribute =
+  
+  ## Specifies the string by which the term is to be sorted; if unspecified, the term content is used
+  attribute sortas { text }
+db.index.type.attribute =
+  
+  ## Specifies the target index for this term
+  attribute type { text }
+div {
+  db.itermset.role.attribute = attribute role { text }
+  db.itermset.attlist =
+    db.itermset.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.itermset =
+    
+    ## A set of index terms in the meta-information of a document
+    element itermset { db.itermset.attlist, db.indexterm.singular+ }
+}
+db.indexterm.contentmodel =
+  db.primary?,
+  ((db.secondary,
+    ((db.tertiary, (db.see | db.seealso+)?)
+     | db.see
+     | db.seealso+)?)
+   | db.see
+   | db.seealso+)?
+div {
+  db.indexterm.singular.role.attribute = attribute role { text }
+  db.indexterm.singular.class.attribute =
+    
+    ## Identifies the class of index term
+    attribute class {
+      
+      ## A singular index term
+      "singular"
+    }
+  db.indexterm.singular.attlist =
+    db.indexterm.singular.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.significance.attribute?
+    & db.zone.attribute?
+    & db.indexterm.pagenum.attribute?
+    & db.scope.attribute?
+    & db.index.type.attribute?
+    & db.indexterm.singular.class.attribute?
+  db.indexterm.singular =
+    
+    ## A wrapper for an indexed term
+    element indexterm {
+      db.indexterm.singular.attlist, db.indexterm.contentmodel
+    }
+}
+div {
+  db.indexterm.startofrange.role.attribute = attribute role { text }
+  db.indexterm.startofrange.class.attribute =
+    
+    ## Identifies the class of index term
+    attribute class {
+      
+      ## The start of a range
+      "startofrange"
+    }
+  db.indexterm.startofrange.attlist =
+    db.indexterm.startofrange.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.significance.attribute?
+    & db.zone.attribute?
+    & db.indexterm.pagenum.attribute?
+    & db.scope.attribute?
+    & db.index.type.attribute?
+    & db.indexterm.startofrange.class.attribute
+  db.indexterm.startofrange =
+    
+    ## A wrapper for an indexed term that covers a range
+    element indexterm {
+      db.indexterm.startofrange.attlist, db.indexterm.contentmodel
+    }
+}
+div {
+  db.indexterm.endofrange.role.attribute = attribute role { text }
+  db.indexterm.endofrange.class.attribute =
+    
+    ## Identifies the class of index term
+    attribute class {
+      
+      ## The end of a range
+      "endofrange"
+    }
+  db.indexterm.endofrange.startref.attribute =
+    
+    ## Points to the start of the range
+    attribute startref { xsd:IDREF }
+  db.indexterm.endofrange.attlist =
+    db.indexterm.endofrange.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.indexterm.endofrange.class.attribute
+    & db.indexterm.endofrange.startref.attribute
+  db.indexterm.endofrange =
+    
+    ## Identifies the end of a range associated with an indexed term
+    element indexterm { db.indexterm.endofrange.attlist, empty }
+}
+div {
+  db.indexterm =
+    db.indexterm.singular
+    | db.indexterm.startofrange
+    | db.indexterm.endofrange
+}
+div {
+  db.primary.role.attribute = attribute role { text }
+  db.primary.attlist =
+    db.primary.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.sortas.attribute?
+  db.primary =
+    
+    ## The primary word or phrase under which an index term should be sorted
+    element primary { db.primary.attlist, db.all.inlines* }
+}
+div {
+  db.secondary.role.attribute = attribute role { text }
+  db.secondary.attlist =
+    db.secondary.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.sortas.attribute?
+  db.secondary =
+    
+    ## A secondary word or phrase in an index term
+    element secondary { db.secondary.attlist, db.all.inlines* }
+}
+div {
+  db.tertiary.role.attribute = attribute role { text }
+  db.tertiary.attlist =
+    db.tertiary.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.sortas.attribute?
+  db.tertiary =
+    
+    ## A tertiary word or phrase in an index term
+    element tertiary { db.tertiary.attlist, db.all.inlines* }
+}
+div {
+  db.see.role.attribute = attribute role { text }
+  db.see.attlist =
+    db.see.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.see =
+    
+    ## Part of an index term directing the reader instead to another entry in the index
+    element see { db.see.attlist, db.all.inlines* }
+}
+div {
+  db.seealso.role.attribute = attribute role { text }
+  db.seealso.attlist =
+    db.seealso.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.seealso =
+    
+    ## Part of an index term directing the reader also to another entry in the index
+    element seealso { db.seealso.attlist, db.all.inlines* }
+}
+div {
+  db.index.status.attribute = db.status.attribute
+  db.index.role.attribute = attribute role { text }
+  db.index.attlist =
+    db.index.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.label.attribute?
+    & db.index.status.attribute?
+    & db.index.type.attribute?
+  db.index.info = db._info
+  # Yes, db.indexdiv* and db.indexentry*; that way an <index/> is valid.
+  # Authors can use an empty index to indicate where a generated index should
+  # appear.
+  db.index =
+    
+    ## An index to a book or part of a book
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:index"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element index {
+      db.index.attlist,
+      db.index.info,
+      db.all.blocks*,
+      (db.indexdiv* | db.indexentry* | db.segmentedlist)
+    }
+}
+div {
+  db.setindex.status.attribute = db.status.attribute
+  db.setindex.role.attribute = attribute role { text }
+  db.setindex.attlist =
+    db.setindex.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.label.attribute?
+    & db.setindex.status.attribute?
+    & db.index.type.attribute?
+  db.setindex.info = db._info
+  db.setindex =
+    
+    ## An index to a set of books
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:setindex"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element setindex {
+      db.setindex.attlist,
+      db.setindex.info,
+      db.all.blocks*,
+      (db.indexdiv* | db.indexentry*)
+    }
+}
+div {
+  db.indexdiv.status.attribute = db.status.attribute
+  db.indexdiv.role.attribute = attribute role { text }
+  db.indexdiv.attlist =
+    db.indexdiv.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.label.attribute?
+    & db.indexdiv.status.attribute?
+  db.indexdiv.info = db._info.title.req
+  db.indexdiv =
+    
+    ## A division in an index
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:indexdiv"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element indexdiv {
+      db.indexdiv.attlist,
+      db.indexdiv.info,
+      db.all.blocks*,
+      (db.indexentry+ | db.segmentedlist)
+    }
+}
+div {
+  db.indexentry.role.attribute = attribute role { text }
+  db.indexentry.attlist =
+    db.indexentry.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.indexentry =
+    
+    ## An entry in an index
+    element indexentry {
+      db.indexentry.attlist,
+      db.primaryie,
+      (db.seeie | db.seealsoie)*,
+      (db.secondaryie, (db.seeie | db.seealsoie | db.tertiaryie)*)*
+    }
+}
+div {
+  db.primaryie.role.attribute = attribute role { text }
+  db.primaryie.attlist =
+    db.primaryie.role.attribute?
+    & db.common.attributes
+    & db.linkends.attribute?
+  db.primaryie =
+    
+    ## A primary term in an index entry, not in the text
+    element primaryie { db.primaryie.attlist, db.all.inlines* }
+}
+div {
+  db.secondaryie.role.attribute = attribute role { text }
+  db.secondaryie.attlist =
+    db.secondaryie.role.attribute?
+    & db.common.attributes
+    & db.linkends.attribute?
+  db.secondaryie =
+    
+    ## A secondary term in an index entry, rather than in the text
+    element secondaryie { db.secondaryie.attlist, db.all.inlines* }
+}
+div {
+  db.tertiaryie.role.attribute = attribute role { text }
+  db.tertiaryie.attlist =
+    db.tertiaryie.role.attribute?
+    & db.common.attributes
+    & db.linkends.attribute?
+  db.tertiaryie =
+    
+    ## A tertiary term in an index entry, rather than in the text
+    element tertiaryie { db.tertiaryie.attlist, db.all.inlines* }
+}
+div {
+  db.seeie.role.attribute = attribute role { text }
+  db.seeie.attlist =
+    db.seeie.role.attribute?
+    & db.common.attributes
+    & db.linkend.attribute?
+  db.seeie =
+    
+    ## A See
+    ## entry in an index, rather than in the text
+    element seeie { db.seeie.attlist, db.all.inlines* }
+}
+div {
+  db.seealsoie.role.attribute = attribute role { text }
+  db.seealsoie.attlist =
+    db.seealsoie.role.attribute?
+    & db.common.attributes
+    & db.linkends.attribute?
+  db.seealsoie =
+    
+    ## A See also
+    ##  entry in an index, rather than in the text
+    element seealsoie { db.seealsoie.attlist, db.all.inlines* }
+}
+db.toc.pagenum.attribute =
+  
+  ## Indicates the page on which this element occurs in some version of the printed document
+  attribute pagenum { text }
+div {
+  db.toc.role.attribute = attribute role { text }
+  db.toc.attlist =
+    db.toc.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.toc.info = db._info.title.only
+  db.toc =
+    
+    ## A table of contents
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:toc"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element toc {
+      db.toc.attlist,
+      db.toc.info,
+      db.all.blocks*,
+      (db.tocdiv | db.tocentry)*
+    }
+}
+div {
+  db.tocdiv.role.attribute = attribute role { text }
+  db.tocdiv.pagenum.attribute = db.toc.pagenum.attribute
+  db.tocdiv.attlist =
+    db.tocdiv.role.attribute?
+    & db.common.attributes
+    & db.tocdiv.pagenum.attribute?
+    & db.linkend.attribute?
+  db.tocdiv.info = db._info
+  db.tocdiv =
+    
+    ## A division in a table of contents
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:tocdiv"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element tocdiv {
+      db.tocdiv.attlist,
+      db.tocdiv.info,
+      db.all.blocks*,
+      (db.tocdiv | db.tocentry)+
+    }
+}
+div {
+  db.tocentry.role.attribute = attribute role { text }
+  db.tocentry.pagenum.attribute = db.toc.pagenum.attribute
+  db.tocentry.attlist =
+    db.tocentry.role.attribute?
+    & db.common.attributes
+    & db.tocentry.pagenum.attribute?
+    & db.linkend.attribute?
+  db.tocentry =
+    
+    ## A component title in a table of contents
+    element tocentry { db.tocentry.attlist, db.all.inlines* }
+}
+db.task.info = db._info.title.req
+div {
+  db.task.role.attribute = attribute role { text }
+  db.task.attlist =
+    db.task.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.task =
+    
+    ## A task to be completed
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:task"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element task {
+      db.task.attlist,
+      db.task.info,
+      db.tasksummary?,
+      db.taskprerequisites?,
+      db.procedure+,
+      db.example*,
+      db.taskrelated?
+    }
+}
+div {
+  db.tasksummary.role.attribute = attribute role { text }
+  db.tasksummary.attlist =
+    db.tasksummary.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.tasksummary.info = db._info.title.only
+  db.tasksummary =
+    
+    ## A summary of a task
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:tasksummary"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element tasksummary {
+      db.tasksummary.attlist, db.tasksummary.info, db.all.blocks+
+    }
+}
+div {
+  db.taskprerequisites.role.attribute = attribute role { text }
+  db.taskprerequisites.attlist =
+    db.taskprerequisites.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.taskprerequisites.info = db._info.title.only
+  db.taskprerequisites =
+    
+    ## The prerequisites for a task
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:taskprerequisites"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element taskprerequisites {
+      db.taskprerequisites.attlist,
+      db.taskprerequisites.info,
+      db.all.blocks+
+    }
+}
+div {
+  db.taskrelated.role.attribute = attribute role { text }
+  db.taskrelated.attlist =
+    db.taskrelated.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.taskrelated.info = db._info.title.only
+  db.taskrelated =
+    
+    ## Information related to a task
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:taskrelated"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element taskrelated {
+      db.taskrelated.attlist, db.taskrelated.info, db.all.blocks+
+    }
+}
+db.area.units.enumeration =
+  
+  ## Coordinates expressed as a pair of CALS graphic coordinates.
+  "calspair"
+  | 
+    ## Coordinates expressed as a line and column.
+    "linecolumn"
+  | 
+    ## Coordinates expressed as a pair of lines and columns.
+    "linecolumnpair"
+  | 
+    ## Coordinates expressed as a line range.
+    "linerange"
+db.area.units-enum.attribute =
+  
+  ## Identifies the units used in the coords attribute. The default units vary according to the type of callout specified: calspair
+  ##  for graphics and linecolumn
+  ##  for line-oriented elements.
+  attribute units { db.area.units.enumeration }?
+db.area.units-other.attributes =
+  
+  ## Indicates that non-standard units are used for this area
+  ## . In this case otherunits
+  ##  must be specified.
+  attribute units {
+    
+    ## Coordinates expressed in some non-standard units.
+    "other"
+  }?,
+  
+  ## Identifies the units used in the coords
+  ##  attribute when the units
+  ##  attribute is other
+  ## . This attribute is forbidden otherwise.
+  attribute otherunits { xsd:NMTOKEN }
+db.area.units.attribute =
+  db.area.units-enum.attribute | db.area.units-other.attributes
+div {
+  db.calloutlist.role.attribute = attribute role { text }
+  db.calloutlist.attlist =
+    db.calloutlist.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.calloutlist.info = db._info.title.only
+  db.calloutlist =
+    
+    ## A list of callout
+    ## s
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:calloutlist"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element calloutlist {
+      db.calloutlist.attlist,
+      db.calloutlist.info,
+      db.all.blocks*,
+      db.callout+
+    }
+}
+div {
+  db.callout.role.attribute = attribute role { text }
+  db.callout.arearefs.attribute =
+    
+    ## Identifies the areas described by this callout.
+    attribute arearefs { xsd:IDREFS }
+  db.callout.attlist =
+    db.callout.role.attribute?
+    & db.common.attributes
+    & db.callout.arearefs.attribute
+  db.callout =
+    
+    ## A called out
+    ##  description of a marked area
+    element callout { db.callout.attlist, db.all.blocks+ }
+}
+div {
+  db.programlistingco.role.attribute = attribute role { text }
+  db.programlistingco.attlist =
+    db.programlistingco.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.programlistingco.info = db._info.title.forbidden
+  db.programlistingco =
+    
+    ## A program listing with associated areas used in callouts
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:programlistingco"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element programlistingco {
+      db.programlistingco.attlist,
+      db.programlistingco.info,
+      db.areaspec,
+      db.programlisting,
+      db.calloutlist*
+    }
+}
+div {
+  db.areaspec.role.attribute = attribute role { text }
+  db.areaspec.attlist =
+    db.areaspec.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.area.units.attribute
+  db.areaspec =
+    
+    ## A collection of regions in a graphic or code example
+    element areaspec { db.areaspec.attlist, (db.area | db.areaset)+ }
+}
+div {
+  db.area.role.attribute = attribute role { text }
+  db.area.linkends.attribute =
+    
+    ## Point to the callout
+    ## s which refer to this area. (This provides bidirectional linking which may be useful in online presentation.)
+    attribute linkends { xsd:IDREFS }
+  db.area.label.attribute =
+    
+    ## Specifies an identifying number or string that may be used in presentation. The area label might be drawn on top of the figure, for example, at the position indicated by the coords attribute.
+    attribute label { text }
+  db.area.coords.attribute =
+    
+    ## Provides the coordinates of the area. The coordinates must be interpreted using the units
+    ##  specified.
+    attribute coords { text }
+  db.area.attlist =
+    db.area.role.attribute?
+    & db.common.idreq.attributes
+    & db.area.units.attribute
+    & (db.area.linkends.attribute | db.xlink.simple.link.attributes)?
+    & db.area.label.attribute?
+    & db.area.coords.attribute
+  db.area =
+    
+    ## A region defined for a callout in a graphic or code example
+    element area { db.area.attlist, db.alt? }
+}
+div {
+  # The only difference is that xml:id is optional
+  db.area.inareaset.attlist =
+    db.area.role.attribute?
+    & db.common.attributes
+    & db.area.units.attribute
+    & (db.area.linkends.attribute | db.xlink.simple.link.attributes)?
+    & db.area.label.attribute?
+    & db.area.coords.attribute
+  db.area.inareaset =
+    
+    ## A region defined for a callout in a graphic or code example
+    element area { db.area.inareaset.attlist, db.alt? }
+}
+div {
+  db.areaset.role.attribute = attribute role { text }
+  db.areaset.linkends.attribute = db.linkends.attribute
+  db.areaset.label.attribute = db.label.attribute
+  db.areaset.attlist =
+    db.areaset.role.attribute?
+    & db.common.idreq.attributes
+    & db.area.units.attribute
+    & (db.areaset.linkends.attribute | db.xlink.simple.link.attributes)?
+    & db.areaset.label.attribute?
+  db.areaset =
+    
+    ## A set of related areas in a graphic or code example
+    element areaset { db.areaset.attlist, db.area.inareaset+ }
+}
+div {
+  db.screenco.role.attribute = attribute role { text }
+  db.screenco.attlist =
+    db.screenco.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.screenco.info = db._info.title.forbidden
+  db.screenco =
+    
+    ## A screen with associated areas used in callouts
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:screenco"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element screenco {
+      db.screenco.attlist,
+      db.screenco.info,
+      db.areaspec,
+      db.screen,
+      db.calloutlist*
+    }
+}
+div {
+  db.imageobjectco.role.attribute = attribute role { text }
+  db.imageobjectco.attlist =
+    db.imageobjectco.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.imageobjectco.info = db._info.title.forbidden
+  db.imageobjectco =
+    
+    ## A wrapper for an image object with callouts
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:imageobjectco"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element imageobjectco {
+      db.imageobjectco.attlist,
+      db.imageobjectco.info,
+      db.areaspec,
+      db.imageobject+,
+      db.calloutlist*
+    }
+}
+div {
+  db.co.role.attribute = attribute role { text }
+  db.co.linkends.attribute = db.linkends.attribute
+  db.co.label.attribute = db.label.attribute
+  db.co.attlist =
+    db.co.role.attribute?
+    & db.common.idreq.attributes
+    & db.co.linkends.attribute?
+    & db.co.label.attribute?
+  db.co =
+    
+    ## The location of a callout embedded in text
+    element co { db.co.attlist, empty }
+}
+div {
+  db.coref.role.attribute = attribute role { text }
+  db.coref.label.attribute = db.label.attribute
+  db.coref.attlist =
+    db.coref.role.attribute?
+    & db.common.attributes
+    & db.linkend.attribute
+    & db.coref.label.attribute?
+  db.coref =
+    
+    ## A cross reference to a co
+    element coref { db.coref.attlist, empty }
+}
+div {
+  db.productionset.role.attribute = attribute role { text }
+  db.productionset.attlist =
+    db.productionset.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.productionset.info = db._info.title.only
+  db.productionset =
+    
+    ## A set of EBNF productions
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:productionset"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element productionset {
+      db.productionset.attlist,
+      db.productionset.info,
+      (db.production | db.productionrecap)+
+    }
+}
+div {
+  db.production.role.attribute = attribute role { text }
+  db.production.attlist =
+    db.production.role.attribute?
+    & db.common.idreq.attributes
+    & db.common.linking.attributes
+  db.production =
+    
+    ## A production in a set of EBNF productions
+    element production {
+      db.production.attlist, db.lhs, db.rhs+, db.constraint*
+    }
+}
+div {
+  db.lhs.role.attribute = attribute role { text }
+  db.lhs.attlist =
+    db.lhs.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.lhs =
+    
+    ## The left-hand side of an EBNF production
+    element lhs { db.lhs.attlist, text }
+}
+div {
+  db.rhs.role.attribute = attribute role { text }
+  db.rhs.attlist =
+    db.rhs.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.rhs =
+    
+    ## The right-hand side of an EBNF production
+    element rhs {
+      db.rhs.attlist,
+      (text | db.nonterminal | db.lineannotation | db.sbr)*
+    }
+}
+div {
+  db.nonterminal.role.attribute = attribute role { text }
+  db.nonterminal.def.attribute =
+    
+    ## Specifies a URI that points to a production
+    ## where the nonterminal
+    ##  is defined
+    attribute def { xsd:anyURI }
+  db.nonterminal.attlist =
+    db.nonterminal.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.nonterminal.def.attribute
+  db.nonterminal =
+    
+    ## A non-terminal in an EBNF production
+    element nonterminal { db.nonterminal.attlist, text }
+}
+div {
+  db.constraint.role.attribute = attribute role { text }
+  db.constraint.attlist =
+    db.constraint.role.attribute?
+    & db.common.attributes
+    & db.common.req.linking.attributes
+  db.constraint =
+    
+    ## A constraint in an EBNF production
+    element constraint { db.constraint.attlist, empty }
+}
+div {
+  db.productionrecap.role.attribute = attribute role { text }
+  db.productionrecap.attlist =
+    db.productionrecap.role.attribute?
+    & db.common.attributes
+    & db.common.req.linking.attributes
+  db.productionrecap =
+    
+    ## A cross-reference to an EBNF production
+    element productionrecap { db.productionrecap.attlist, empty }
+}
+div {
+  db.constraintdef.role.attribute = attribute role { text }
+  db.constraintdef.attlist =
+    db.constraintdef.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.constraintdef.info = db._info.title.only
+  db.constraintdef =
+    
+    ## The definition of a constraint in an EBNF production
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:constraintdef"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element constraintdef {
+      db.constraintdef.attlist, db.constraintdef.info, db.all.blocks+
+    }
+}
+db.char.attribute =
+  
+  ## Specifies the alignment character when align
+  ##  is set to char
+  ## .
+  attribute char { text }
+db.charoff.attribute =
+  
+  ## Specifies the percentage of the column's total width that should appear to the left of the first occurance of the character identified in char
+  ##  when align
+  ##  is set to char
+  ## .
+  attribute charoff {
+    xsd:decimal { minExclusive = "0" maxExclusive = "100" }
+  }
+db.frame.attribute =
+  
+  ## Specifies how the table is to be framed. Note that there is no way to obtain a border on only the starting edge (left, in left-to-right writing systems) of the table.
+  attribute frame {
+    
+    ## Frame all four sides of the table. In some environments with limited control over table border formatting, such as HTML, this may imply additional borders.
+    "all"
+    | 
+      ## Frame only the bottom of the table.
+      "bottom"
+    | 
+      ## Place no border on the table. In some environments with limited control over table border formatting, such as HTML, this may disable other borders as well.
+      "none"
+    | 
+      ## Frame the left and right sides of the table.
+      "sides"
+    | 
+      ## Frame the top of the table.
+      "top"
+    | 
+      ## Frame the top and bottom of the table.
+      "topbot"
+  }
+db.colsep.attribute =
+  
+  ## Specifies the presence or absence of the column separator
+  attribute colsep {
+    
+    ## No column separator rule.
+    "0"
+    | 
+      ## Provide a column separator rule on the right
+      "1"
+  }
+db.rowsep.attribute =
+  
+  ## Specifies the presence or absence of the row separator
+  attribute rowsep {
+    
+    ## No row separator rule.
+    "0"
+    | 
+      ## Provide a row separator rule below
+      "1"
+  }
+db.orient.attribute =
+  
+  ## Specifies the orientation of the table
+  attribute orient {
+    
+    ## 90 degrees counter-clockwise from the rest of the text flow.
+    "land"
+    | 
+      ## The same orientation as the rest of the text flow.
+      "port"
+  }
+db.tabstyle.attribute =
+  
+  ## Specifies the table style
+  attribute tabstyle { text }
+db.rowheader.attribute =
+  
+  ## Indicates whether or not the entries in the first column should be considered row headers
+  attribute rowheader {
+    
+    ## Indicates that entries in the first column of the table are functionally row headers (analogous to the way that a thead provides column headers).
+    "firstcol"
+    | 
+      ## Indicates that entries in the first column have no special significance with respect to column headers.
+      "norowheader"
+  }
+db.align.attribute =
+  
+  ## Specifies the horizontal alignment of text in an entry.
+  attribute align {
+    
+    ## Centered.
+    "center"
+    | 
+      ## Aligned on a particular character.
+      "char"
+    | 
+      ## Left and right justified.
+      "justify"
+    | 
+      ## Left justified.
+      "left"
+    | 
+      ## Right justified.
+      "right"
+  }
+db.valign.attribute =
+  
+  ## Specifies the vertical alignment of text in an entry.
+  attribute valign {
+    
+    ## Aligned on the bottom of the entry.
+    "bottom"
+    | 
+      ## Aligned in the middle.
+      "middle"
+    | 
+      ## Aligned at the top of the entry.
+      "top"
+  }
+db.specify-col-by-colname.attributes =
+  
+  ## Specifies a column specification by name.
+  attribute colname { text }
+db.specify-col-by-namest.attributes =
+  
+  ## Specifies a starting column by name.
+  attribute namest { text }
+db.specify-span-by-spanspec.attributes =
+  
+  ## Specifies a span by name.
+  attribute spanname { text }
+db.specify-span-directly.attributes =
+  
+  ## Specifies a starting column by name.
+  attribute namest { text }
+  & 
+    ## Specifies an ending column by name.
+    attribute nameend { text }
+db.column-spec.attributes =
+  db.specify-col-by-colname.attributes
+  | db.specify-col-by-namest.attributes
+  | db.specify-span-by-spanspec.attributes
+  | db.specify-span-directly.attributes
+db.colname.attribute =
+  
+  ## Provides a name for a column specification.
+  attribute colname { text }
+db.spanname.attribute =
+  
+  ## Provides a name for a span specification.
+  attribute spanname { text }
+div {
+  db.tgroup.role.attribute = attribute role { text }
+  db.tgroup.tgroupstyle.attribute =
+    
+    ## Additional style information for downstream processing; typically the name of a style.
+    attribute tgroupstyle { text }
+  db.tgroup.cols.attribute =
+    
+    ## The number of columns in the table. Must be an integer greater than zero.
+    attribute cols { xsd:positiveInteger }
+  db.tgroup.attlist =
+    db.tgroup.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.char.attribute?
+    & db.charoff.attribute?
+    & db.tgroup.tgroupstyle.attribute?
+    & db.tgroup.cols.attribute
+    & db.colsep.attribute?
+    & db.rowsep.attribute?
+    & db.align.attribute?
+  db.tgroup =
+    
+    ## A wrapper for the main content of a table, or part of a table
+    element tgroup {
+      db.tgroup.attlist,
+      db.colspec*,
+      db.spanspec*,
+      db.cals.thead?,
+      db.cals.tfoot?,
+      db.cals.tbody
+    }
+}
+div {
+  db.colspec.role.attribute = attribute role { text }
+  db.colspec.colnum.attribute =
+    
+    ## The number of the column to which this specification applies. Must be greater than any preceding column number. Defaults to one more than the number of the preceding column, if there is one, or one.
+    attribute colnum { xsd:positiveInteger }
+  db.colspec.colwidth.attribute =
+    
+    ## Specifies the width of the column.
+    attribute colwidth { text }
+  db.colspec.attlist =
+    db.colspec.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.colspec.colnum.attribute?
+    & db.char.attribute?
+    & db.colsep.attribute?
+    & db.colspec.colwidth.attribute?
+    & db.charoff.attribute?
+    & db.colname.attribute?
+    & db.rowsep.attribute?
+    & db.align.attribute?
+  db.colspec =
+    
+    ## Specifications for a column in a table
+    element colspec { db.colspec.attlist, empty }
+}
+div {
+  db.spanspec.role.attribute = attribute role { text }
+  db.spanspec.namest.attribute =
+    
+    ## Specifies a starting column by name.
+    attribute namest { text }
+  db.spanspec.nameend.attribute =
+    
+    ## Specifies an ending column by name.
+    attribute nameend { text }
+  db.spanspec.attlist =
+    db.spanspec.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.spanname.attribute
+    & db.spanspec.namest.attribute
+    & db.spanspec.nameend.attribute
+    & db.char.attribute?
+    & db.colsep.attribute?
+    & db.charoff.attribute?
+    & db.rowsep.attribute?
+    & db.align.attribute?
+  db.spanspec =
+    
+    ## Formatting information for a spanned column in a table
+    element spanspec { db.spanspec.attlist, empty }
+}
+div {
+  db.cals.thead.role.attribute = attribute role { text }
+  db.cals.thead.attlist =
+    db.cals.thead.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.valign.attribute?
+  db.cals.thead =
+    
+    ## A table header consisting of one or more rows
+    element thead { db.cals.thead.attlist, db.colspec*, db.row+ }
+}
+div {
+  db.cals.tfoot.role.attribute = attribute role { text }
+  db.cals.tfoot.attlist =
+    db.cals.tfoot.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.valign.attribute?
+  db.cals.tfoot =
+    
+    ## A table footer consisting of one or more rows
+    element tfoot { db.cals.tfoot.attlist, db.colspec*, db.row+ }
+}
+div {
+  db.cals.tbody.role.attribute = attribute role { text }
+  db.cals.tbody.attlist =
+    db.cals.tbody.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.valign.attribute?
+  db.cals.tbody =
+    
+    ## A wrapper for the rows of a table or informal table
+    element tbody { db.cals.tbody.attlist, db.row+ }
+}
+div {
+  db.row.role.attribute = attribute role { text }
+  db.row.attlist =
+    db.row.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.rowsep.attribute?
+    & db.valign.attribute?
+  db.row =
+    
+    ## A row in a table
+    element row { db.row.attlist, (db.entry | db.entrytbl)+ }
+}
+div {
+  db.entry.role.attribute = attribute role { text }
+  db.entry.morerows.attribute =
+    
+    ## Specifies the number of additional rows which this entry occupies. Defaults to zero.
+    attribute morerows { xsd:integer }
+  db.entry.rotate.attribute =
+    
+    ## Specifies the rotation of this entry. A value of 1 (true) rotates the cell 90 degrees counter-clockwise. A value of 0 (false) leaves the cell unrotated.
+    attribute rotate {
+      
+      ## Do not rotate the cell.
+      "0"
+      | 
+        ## Rotate the cell 90 degrees counter-clockwise.
+        "1"
+    }
+  db.entry.attlist =
+    db.entry.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.valign.attribute?
+    & db.char.attribute?
+    & db.colsep.attribute?
+    & db.charoff.attribute?
+    & db.entry.morerows.attribute?
+    & db.column-spec.attributes?
+    & db.rowsep.attribute?
+    & db.entry.rotate.attribute?
+    & db.align.attribute?
+  db.entry =
+    
+    ## A cell in a table
+    [
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:entry"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:table)"
+            "table must not occur among the children or descendants of entry"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:entry"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:informaltable)"
+            "informaltable must not occur among the children or descendants of entry"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element entry {
+      db.entry.attlist, (db.all.inlines* | db.all.blocks*)
+    }
+}
+div {
+  db.entrytbl.role.attribute = attribute role { text }
+  db.entrytbl.tgroupstyle.attribute =
+    
+    ## Additional style information for downstream processing; typically the name of a style.
+    attribute tgroupstyle { text }
+  db.entrytbl.cols.attribute =
+    
+    ## The number of columns in the entry table. Must be an integer greater than zero.
+    attribute cols { xsd:positiveInteger }
+  db.entrytbl.attlist =
+    db.entrytbl.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.char.attribute?
+    & db.charoff.attribute?
+    & db.column-spec.attributes?
+    & db.entrytbl.tgroupstyle.attribute?
+    & db.entrytbl.cols.attribute?
+    & db.colsep.attribute?
+    & db.rowsep.attribute?
+    & db.align.attribute?
+  db.entrytbl =
+    
+    ## A subtable appearing in place of an entry in a table
+    element entrytbl {
+      db.entrytbl.attlist,
+      db.colspec*,
+      db.spanspec*,
+      db.cals.entrytbl.thead?,
+      db.cals.entrytbl.tbody
+    }
+}
+div {
+  db.cals.entrytbl.thead.role.attribute = attribute role { text }
+  db.cals.entrytbl.thead.attlist =
+    db.cals.entrytbl.thead.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.valign.attribute?
+  db.cals.entrytbl.thead =
+    
+    ## A table header consisting of one or more rows
+    element thead {
+      db.cals.entrytbl.thead.attlist, db.colspec*, db.entrytbl.row+
+    }
+}
+div {
+  db.cals.entrytbl.tbody.role.attribute = attribute role { text }
+  db.cals.entrytbl.tbody.attlist =
+    db.cals.entrytbl.tbody.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.valign.attribute?
+  db.cals.entrytbl.tbody =
+    
+    ## A wrapper for the rows of a table or informal table
+    element tbody { db.cals.entrytbl.tbody.attlist, db.entrytbl.row+ }
+}
+div {
+  db.entrytbl.row.role.attribute = attribute role { text }
+  db.entrytbl.row.attlist =
+    db.entrytbl.row.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.rowsep.attribute?
+    & db.valign.attribute?
+  db.entrytbl.row =
+    
+    ## A row in a table
+    element row { db.entrytbl.row.attlist, db.entry+ }
+}
+div {
+  db.cals.table.role.attribute = attribute role { text }
+  db.cals.table.label.attribute = db.label.attribute
+  db.cals.table.attlist =
+    db.cals.table.role.attribute?
+    & db.cals.table.label.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.tabstyle.attribute?
+    & db.floatstyle.attribute?
+    & db.orient.attribute?
+    & db.colsep.attribute?
+    & db.rowsep.attribute?
+    & db.frame.attribute?
+    & db.pgwide.attribute?
+    & 
+      ## Indicates if the short or long title should be used in a List of Tables
+      attribute shortentry {
+        
+        ## Indicates that the full title should be used.
+        "0"
+        | 
+          ## Indicates that the short short title (titleabbrev) should be used.
+          "1"
+      }?
+    & 
+      ## Indicates if the table should appear in a List of Tables
+      attribute tocentry {
+        
+        ## Indicates that the table should not occur in the List of Tables.
+        "0"
+        | 
+          ## Indicates that the table should appear in the List of Tables.
+          "1"
+      }?
+    & db.rowheader.attribute?
+  db.cals.table.info = db._info.title.onlyreq
+  db.cals.table =
+    
+    ## A formal table in a document
+    [
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:table"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:example)"
+            "example must not occur among the children or descendants of table"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:table"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:figure)"
+            "figure must not occur among the children or descendants of table"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:table"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:equation)"
+            "equation must not occur among the children or descendants of table"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:table"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:caution)"
+            "caution must not occur among the children or descendants of table"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:table"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:important)"
+            "important must not occur among the children or descendants of table"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:table"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:note)"
+            "note must not occur among the children or descendants of table"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:table"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:tip)"
+            "tip must not occur among the children or descendants of table"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:table"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:warning)"
+            "warning must not occur among the children or descendants of table"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:table"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element table {
+      db.cals.table.attlist,
+      db.cals.table.info,
+      (db.alt? & db.indexing.inlines* & db.textobject*),
+      (db.mediaobject+ | db.tgroup+),
+      db.caption?
+    }
+}
+div {
+  db.cals.informaltable.role.attribute = attribute role { text }
+  db.cals.informaltable.attlist =
+    db.cals.informaltable.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.tabstyle.attribute?
+    & db.floatstyle.attribute?
+    & db.orient.attribute?
+    & db.colsep.attribute?
+    & db.rowsep.attribute?
+    & db.frame.attribute?
+    & db.pgwide.attribute?
+    & db.rowheader.attribute?
+  db.cals.informaltable.info = db._info.title.forbidden
+  db.cals.informaltable =
+    
+    ## A table without a title
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:informaltable"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element informaltable {
+      db.cals.informaltable.attlist,
+      db.cals.informaltable.info,
+      (db.alt? & db.indexing.inlines* & db.textobject*),
+      (db.mediaobject+ | db.tgroup+),
+      db.caption?
+    }
+}
+db.html.coreattrs =
+  
+  ## This attribute assigns a class name or set of class names to an element. Any number of elements may be assigned the same class name or names. Multiple class names must be separated by white space characters.
+  attribute class { text }?
+  & 
+    ## This attribute specifies style information for the current element.
+    attribute style { text }?
+  & 
+    ## This attribute offers advisory information about the element for which it is set.
+    attribute title { text }?
+db.html.i18n =
+  
+  ## This attribute specifies the base language of an element's attribute values and text content. The default value of this attribute is unknown.
+  attribute lang { text }?
+db.html.events =
+  
+  ## Occurs when the pointing device button is clicked over an element.
+  attribute onclick { text }?
+  & 
+    ## Occurs when the pointing device button is double clicked over an element.
+    attribute ondblclick { text }?
+  & 
+    ## Occurs when the pointing device button is pressed over an element.
+    attribute onmousedown { text }?
+  & 
+    ## Occurs when the pointing device button is released over an element.
+    attribute onmouseup { text }?
+  & 
+    ## Occurs when the pointing device is moved onto an element.
+    attribute onmouseover { text }?
+  & 
+    ## Occurs when the pointing device is moved while it is over an element.
+    attribute onmousemove { text }?
+  & 
+    ## Occurs when the pointing device is moved away from an element.
+    attribute onmouseout { text }?
+  & 
+    ## Occurs when a key is pressed and released over an element.
+    attribute onkeypress { text }?
+  & 
+    ## Occurs when a key is pressed down over an element.
+    attribute onkeydown { text }?
+  & 
+    ## Occurs when a key is released over an element.
+    attribute onkeyup { text }?
+db.html.attrs =
+  db.common.attributes
+  & db.html.coreattrs
+  & db.html.i18n
+  & db.html.events
+db.html.cellhalign =
+  
+  ## Specifies the alignment of data and the justification of text in a cell.
+  attribute align {
+    
+    ## Left-flush data/Left-justify text. This is the default value for table data.
+    "left"
+    | 
+      ## Center data/Center-justify text. This is the default value for table headers.
+      "center"
+    | 
+      ## Right-flush data/Right-justify text.
+      "right"
+    | 
+      ## Double-justify text.
+      "justify"
+    | 
+      ## Align text around a specific character. If a user agent doesn't support character alignment, behavior in the presence of this value is unspecified.
+      "char"
+  }?
+  & 
+    ## This attribute specifies a single character within a text fragment to act as an axis for alignment. The default value for this attribute is the decimal point character for the current language as set by the lang attribute (e.g., the period in English and the comma in French). User agents are not required to support this attribute.
+    attribute char { text }?
+  & 
+    ## When present, this attribute specifies the offset to the first occurrence of the alignment character on each line. If a line doesn't include the alignment character, it should be horizontally shifted to end at the alignment position. When charoff is used to set the offset of an alignment character, the direction of offset is determined by the current text direction (set by the dir attribute). In left-to-right texts (the default), offset is from the left margin. In right-to-left texts, offset is from the right margin. User agents are not required to support this attribute.
+    attribute charoff {
+      xsd:integer >> a:documentation [ "An explicit offset." ]
+      | xsd:string { pattern = "[0-9]+%" }
+        >> a:documentation [ "A percentage offset." ]
+    }?
+db.html.cellvalign =
+  
+  ## Specifies the vertical position of data within a cell.
+  attribute valign {
+    
+    ## Cell data is flush with the top of the cell.
+    "top"
+    | 
+      ## Cell data is centered vertically within the cell. This is the default value.
+      "middle"
+    | 
+      ## Cell data is flush with the bottom of the cell.
+      "bottom"
+    | 
+      ## All cells in the same row as a cell whose valign attribute has this value should have their textual data positioned so that the first text line occurs on a baseline common to all cells in the row. This constraint does not apply to subsequent text lines in these cells.
+      "baseline"
+  }?
+db.html.table.attributes =
+  
+  ## Provides a summary of the table's purpose and structure for user agents rendering to non-visual media such as speech and Braille.
+  attribute summary { text }?
+  & 
+    ## Specifies the desired width of the entire table and is intended for visual user agents. When the value is a percentage value, the value is relative to the user agent's available horizontal space. In the absence of any width specification, table width is determined by the user agent.
+    attribute width {
+      xsd:integer >> a:documentation [ "An explicit width." ]
+      | xsd:string { pattern = "[0-9]+%" }
+        >> a:documentation [ "A percentage width." ]
+    }?
+  & 
+    ## Specifies the width (in pixels only) of the frame around a table.
+    attribute border { xsd:nonNegativeInteger }?
+  & 
+    ## Specifies which sides of the frame surrounding a table will be visible.
+    attribute frame {
+      
+      ## No sides. This is the default value.
+      "void"
+      | 
+        ## The top side only.
+        "above"
+      | 
+        ## The bottom side only.
+        "below"
+      | 
+        ## The top and bottom sides only.
+        "hsides"
+      | 
+        ## The left-hand side only.
+        "lhs"
+      | 
+        ## The right-hand side only.
+        "rhs"
+      | 
+        ## The right and left sides only.
+        "vsides"
+      | 
+        ## All four sides.
+        "box"
+      | 
+        ## All four sides.
+        "border"
+    }?
+  & 
+    ## Specifies which rules will appear between cells within a table. The rendering of rules is user agent dependent.
+    attribute rules {
+      
+      ## No rules. This is the default value.
+      "none"
+      | 
+        ## Rules will appear between row groups (see thead, tfoot, and tbody) and column groups (see colgroup and col) only.
+        "groups"
+      | 
+        ## Rules will appear between rows only.
+        "rows"
+      | 
+        ## Rules will appear between columns only.
+        "cols"
+      | 
+        ## Rules will appear between all rows and columns.
+        "all"
+    }?
+  & 
+    ## Specifies how much space the user agent should leave between the left side of the table and the left-hand side of the leftmost column, the top of the table and the top side of the topmost row, and so on for the right and bottom of the table. The attribute also specifies the amount of space to leave between cells.
+    attribute cellspacing {
+      xsd:integer >> a:documentation [ "An explicit spacing." ]
+      | xsd:string { pattern = "[0-9]+%" }
+        >> a:documentation [ "A percentage spacing." ]
+    }?
+  & 
+    ## Specifies the amount of space between the border of the cell and its contents. If the value of this attribute is a pixel length, all four margins should be this distance from the contents. If the value of the attribute is a percentage length, the top and bottom margins should be equally separated from the content based on a percentage of the available vertical space, and the left and right margins should be equally separated from the content based on a percentage of the available horizontal space.
+    attribute cellpadding {
+      xsd:integer >> a:documentation [ "An explicit padding." ]
+      | xsd:string { pattern = "[0-9]+%" }
+        >> a:documentation [ "A percentage padding." ]
+    }?
+db.html.tablecell.attributes =
+  
+  ## Provides an abbreviated form of the cell's content and may be rendered by user agents when appropriate in place of the cell's content. Abbreviated names should be short since user agents may render them repeatedly. For instance, speech synthesizers may render the abbreviated headers relating to a particular cell before rendering that cell's content.
+  attribute abbr { text }?
+  & 
+    ## This attribute may be used to place a cell into conceptual categories that can be considered to form axes in an n-dimensional space. User agents may give users access to these categories (e.g., the user may query the user agent for all cells that belong to certain categories, the user agent may present a table in the form of a table of contents, etc.). Please consult an HTML reference for more details.
+    attribute axis { text }?
+  & 
+    ## Specifies the list of header cells that provide header information for the current data cell. The value of this attribute is a space-separated list of cell names; those cells must be named by setting their id attribute. Authors generally use the headers attribute to help non-visual user agents render header information about data cells (e.g., header information is spoken prior to the cell data), but the attribute may also be used in conjunction with style sheets.
+    attribute headers { text }?
+  & 
+    ## Specifies the set of data cells for which the current header cell provides header information. This attribute may be used in place of the headers attribute, particularly for simple tables.
+    attribute scope {
+      
+      ## The current cell provides header information for the rest of the row that contains it
+      "row"
+      | 
+        ## The current cell provides header information for the rest of the column that contains it.
+        "col"
+      | 
+        ## The header cell provides header information for the rest of the row group that contains it.
+        "rowgroup"
+      | 
+        ## The header cell provides header information for the rest of the column group that contains it.
+        "colgroup"
+    }?
+  & 
+    ## Specifies the number of rows spanned by the current cell. The default value of this attribute is one (1
+    ## ). The value zero (0
+    ## ) means that the cell spans all rows from the current row to the last row of the table section (thead
+    ## , tbody
+    ## , or tfoot
+    ## ) in which the cell is defined.
+    attribute rowspan { xsd:nonNegativeInteger }?
+  & 
+    ## Specifies the number of columns spanned by the current cell. The default value of this attribute is one (1
+    ## ). The value zero (0
+    ## ) means that the cell spans all columns from the current column to the last column of the column group (colgroup
+    ## ) in which the cell is defined.
+    attribute colspan { xsd:nonNegativeInteger }?
+db.html.table.info = db._info.title.forbidden
+db.html.table.model =
+  db.html.table.info?,
+  db.html.caption,
+  (db.html.col* | db.html.colgroup*),
+  db.html.thead?,
+  db.html.tfoot?,
+  (db.html.tbody+ | db.html.tr+)
+db.html.informaltable.info = db._info.title.forbidden
+db.html.informaltable.model =
+  db.html.informaltable.info?,
+  (db.html.col* | db.html.colgroup*),
+  db.html.thead?,
+  db.html.tfoot?,
+  (db.html.tbody+ | db.html.tr+)
+div {
+  db.html.table.role.attribute = attribute role { text }
+  db.html.table.label.attribute = db.label.attribute
+  db.html.table.attlist =
+    db.html.attrs
+    & db.html.table.attributes
+    & db.html.table.role.attribute?
+    & db.html.table.label.attribute?
+    & db.orient.attribute?
+    & db.pgwide.attribute?
+    & db.tabstyle.attribute?
+    & db.floatstyle.attribute?
+  db.html.table =
+    
+    ## A formal (captioned) HTML table in a document
+    [
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:table"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:example)"
+            "example must not occur among the children or descendants of table"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:table"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:figure)"
+            "figure must not occur among the children or descendants of table"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:table"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:equation)"
+            "equation must not occur among the children or descendants of table"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:table"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:caution)"
+            "caution must not occur among the children or descendants of table"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:table"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:important)"
+            "important must not occur among the children or descendants of table"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:table"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:note)"
+            "note must not occur among the children or descendants of table"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:table"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:tip)"
+            "tip must not occur among the children or descendants of table"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:table"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:warning)"
+            "warning must not occur among the children or descendants of table"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:table"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element table { db.html.table.attlist, db.html.table.model }
+}
+div {
+  db.html.informaltable.role.attribute = attribute role { text }
+  db.html.informaltable.label.attribute = db.label.attribute
+  db.html.informaltable.attlist =
+    db.html.attrs
+    & db.html.table.attributes
+    & db.html.informaltable.role.attribute?
+    & db.html.informaltable.label.attribute?
+    & db.orient.attribute?
+    & db.pgwide.attribute?
+    & db.tabstyle.attribute?
+    & db.floatstyle.attribute?
+  db.html.informaltable =
+    
+    ## An HTML table without a title
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:informaltable"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element informaltable {
+      db.html.informaltable.attlist, db.html.informaltable.model
+    }
+}
+div {
+  db.html.caption.attlist = db.html.attrs
+  db.html.caption =
+    
+    ## An HTML table caption
+    [
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:caption"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:example)"
+            "example must not occur among the children or descendants of caption"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:caption"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:figure)"
+            "figure must not occur among the children or descendants of caption"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:caption"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:table)"
+            "table must not occur among the children or descendants of caption"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:caption"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:equation)"
+            "equation must not occur among the children or descendants of caption"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:caption"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:sidebar)"
+            "sidebar must not occur among the children or descendants of caption"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:caption"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:task)"
+            "task must not occur among the children or descendants of caption"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:caption"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:caution)"
+            "caution must not occur among the children or descendants of caption"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:caption"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:important)"
+            "important must not occur among the children or descendants of caption"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:caption"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:note)"
+            "note must not occur among the children or descendants of caption"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:caption"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:tip)"
+            "tip must not occur among the children or descendants of caption"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:caption"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:warning)"
+            "warning must not occur among the children or descendants of caption"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:caption"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element caption { db.html.caption.attlist, db.all.inlines* }
+}
+div {
+  db.html.col.attlist =
+    db.html.attrs
+    & 
+      ## This attribute, whose value must be an integer > 0, specifies the number of columns spanned
+      ##  by the col
+      ##  element; the col
+      ##  element shares its attributes with all the columns it spans. The default value for this attribute is 1 (i.e., a single column). If the span attribute is set to N > 1, the current col
+      ##  element shares its attributes with the next N-1 columns.
+      attribute span { xsd:nonNegativeInteger }?
+    & 
+      ## Specifies a default width for each column spanned by the current col
+      ##  element. It has the same meaning as the width
+      ##  attribute for the colgroup
+      ##  element and overrides it.
+      attribute width { text }?
+    & db.html.cellhalign
+    & db.html.cellvalign
+  db.html.col =
+    
+    ## Specifications for a column in an HTML table
+    element col { db.html.col.attlist, empty }
+}
+div {
+  db.html.colgroup.attlist =
+    db.html.attrs
+    & 
+      ## This attribute, which must be an integer > 0, specifies the number of columns in a column group. In the absence of a span attribute, each colgroup
+      ##  defines a column group containing one column. If the span attribute is set to N > 0, the current colgroup
+      ##  element defines a column group containing N columns. User agents must ignore this attribute if the colgroup
+      ##  element contains one or more col
+      ##  elements.
+      attribute span { xsd:nonNegativeInteger }?
+    & 
+      ## This attribute specifies a default width for each column in the current column group. In addition to the standard pixel, percentage, and relative values, this attribute allows the special form 0*
+      ##  (zero asterisk) which means that the width of the each column in the group should be the minimum width necessary to hold the column's contents. This implies that a column's entire contents must be known before its width may be correctly computed. Authors should be aware that specifying 0*
+      ##  will prevent visual user agents from rendering a table incrementally. This attribute is overridden for any column in the column group whose width is specified via a col
+      ##  element.
+      attribute width { text }?
+    & db.html.cellhalign
+    & db.html.cellvalign
+  db.html.colgroup =
+    
+    ## A group of columns in an HTML table
+    element colgroup { db.html.colgroup.attlist, db.html.col* }
+}
+div {
+  db.html.thead.attlist =
+    db.html.attrs & db.html.cellhalign & db.html.cellvalign
+  db.html.thead =
+    
+    ## A table header consisting of one or more rows in an HTML table
+    element thead { db.html.thead.attlist, db.html.tr+ }
+}
+div {
+  db.html.tfoot.attlist =
+    db.html.attrs & db.html.cellhalign & db.html.cellvalign
+  db.html.tfoot =
+    
+    ## A table footer consisting of one or more rows in an HTML table
+    element tfoot { db.html.tfoot.attlist, db.html.tr+ }
+}
+div {
+  db.html.tbody.attlist =
+    db.html.attrs & db.html.cellhalign & db.html.cellvalign
+  db.html.tbody =
+    
+    ## A wrapper for the rows of an HTML table or informal HTML table
+    element tbody { db.html.tbody.attlist, db.html.tr+ }
+}
+div {
+  db.html.tr.attlist =
+    db.html.attrs & db.html.cellhalign & db.html.cellvalign
+  db.html.tr =
+    
+    ## A row in an HTML table
+    element tr { db.html.tr.attlist, (db.html.th | db.html.td)+ }
+}
+div {
+  db.html.th.attlist =
+    db.html.attrs
+    & db.html.tablecell.attributes
+    & db.html.cellhalign
+    & db.html.cellvalign
+  db.html.th =
+    
+    ## A table header entry in an HTML table
+    element th {
+      db.html.th.attlist, (db.all.inlines* | db.all.blocks*)
+    }
+}
+div {
+  db.html.td.attlist =
+    db.html.attrs
+    & db.html.tablecell.attributes
+    & db.html.cellhalign
+    & db.html.cellvalign
+  db.html.td =
+    
+    ## A table entry in an HTML table
+    element td {
+      db.html.td.attlist, (db.all.inlines* | db.all.blocks*)
+    }
+}
+div {
+  db.msgset.role.attribute = attribute role { text }
+  db.msgset.attlist =
+    db.msgset.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.msgset.info = db._info.title.only
+  db.msgset =
+    
+    ## A detailed set of messages, usually error messages
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:msgset"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element msgset {
+      db.msgset.attlist,
+      db.msgset.info,
+      (db.msgentry+ | db.simplemsgentry+)
+    }
+}
+div {
+  db.msgentry.role.attribute = attribute role { text }
+  db.msgentry.attlist =
+    db.msgentry.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.msgentry =
+    
+    ## A wrapper for an entry in a message set
+    element msgentry {
+      db.msgentry.attlist, db.msg+, db.msginfo?, db.msgexplan*
+    }
+}
+div {
+  db.simplemsgentry.role.attribute = attribute role { text }
+  db.simplemsgentry.msgaud.attribute =
+    
+    ## The audience to which the message relevant
+    attribute msgaud { text }
+  db.simplemsgentry.msgorig.attribute =
+    
+    ## The origin of the message
+    attribute msgorig { text }
+  db.simplemsgentry.msglevel.attribute =
+    
+    ## The level of importance or severity of a message
+    attribute msglevel { text }
+  db.simplemsgentry.attlist =
+    db.simplemsgentry.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.simplemsgentry.msgaud.attribute?
+    & db.simplemsgentry.msgorig.attribute?
+    & db.simplemsgentry.msglevel.attribute?
+  db.simplemsgentry =
+    
+    ## A wrapper for a simpler entry in a message set
+    element simplemsgentry {
+      db.simplemsgentry.attlist, db.msgtext, db.msgexplan+
+    }
+}
+div {
+  db.msg.role.attribute = attribute role { text }
+  db.msg.attlist =
+    db.msg.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.msg.info = db._info.title.only
+  db.msg =
+    
+    ## A message in a message set
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:msg"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element msg {
+      db.msg.attlist, db.msg.info, db.msgmain, (db.msgsub | db.msgrel)*
+    }
+}
+div {
+  db.msgmain.role.attribute = attribute role { text }
+  db.msgmain.attlist =
+    db.msgmain.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.msgmain.info = db._info.title.only
+  db.msgmain =
+    
+    ## The primary component of a message in a message set 
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:msgmain"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element msgmain { db.msgmain.attlist, db.msgmain.info, db.msgtext }
+}
+div {
+  db.msgsub.role.attribute = attribute role { text }
+  db.msgsub.attlist =
+    db.msgsub.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.msgsub.info = db._info.title.only
+  db.msgsub =
+    
+    ## A subcomponent of a message in a message set
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:msgsub"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element msgsub { db.msgsub.attlist, db.msgsub.info, db.msgtext }
+}
+div {
+  db.msgrel.role.attribute = attribute role { text }
+  db.msgrel.attlist =
+    db.msgrel.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.msgrel.info = db._info.title.only
+  db.msgrel =
+    
+    ## A related component of a message in a message set
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:msgrel"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element msgrel { db.msgrel.attlist, db.msgrel.info, db.msgtext }
+}
+div {
+  db.msgtext.role.attribute = attribute role { text }
+  db.msgtext.attlist =
+    db.msgtext.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.msgtext =
+    
+    ## The actual text of a message component in a message set
+    element msgtext { db.msgtext.attlist, db.all.blocks+ }
+}
+div {
+  db.msginfo.role.attribute = attribute role { text }
+  db.msginfo.attlist =
+    db.msginfo.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.msginfo =
+    
+    ## Information about a message in a message set
+    element msginfo {
+      db.msginfo.attlist, (db.msglevel | db.msgorig | db.msgaud)*
+    }
+}
+div {
+  db.msglevel.role.attribute = attribute role { text }
+  db.msglevel.attlist =
+    db.msglevel.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.msglevel =
+    
+    ## The level of importance or severity of a message in a message set
+    element msglevel { db.msglevel.attlist, db._text }
+}
+div {
+  db.msgorig.role.attribute = attribute role { text }
+  db.msgorig.attlist =
+    db.msgorig.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.msgorig =
+    
+    ## The origin of a message in a message set
+    element msgorig { db.msgorig.attlist, db._text }
+}
+div {
+  db.msgaud.role.attribute = attribute role { text }
+  db.msgaud.attlist =
+    db.msgaud.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.msgaud =
+    
+    ## The audience to which a message in a message set is relevant
+    element msgaud { db.msgaud.attlist, db._text }
+}
+div {
+  db.msgexplan.role.attribute = attribute role { text }
+  db.msgexplan.attlist =
+    db.msgexplan.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.msgexplan.info = db._info.title.only
+  db.msgexplan =
+    
+    ## Explanatory material relating to a message in a message set
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:msgexplan"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element msgexplan {
+      db.msgexplan.attlist, db.msgexplan.info, db.all.blocks+
+    }
+}
+div {
+  db.qandaset.role.attribute = attribute role { text }
+  db.qandaset.defaultlabel.enumeration =
+    
+    ## No labels
+    "none"
+    | 
+      ## Numeric labels
+      "number"
+    | 
+      ## "Q:" and "A:" labels
+      "qanda"
+  db.qandaset.defaultlabel.attribute =
+    
+    ## Specifies the default labelling
+    attribute defaultlabel { db.qandaset.defaultlabel.enumeration }
+  db.qandaset.attlist =
+    db.qandaset.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.qandaset.defaultlabel.attribute?
+  db.qandaset.info = db._info.title.only
+  db.qandaset =
+    
+    ## A question-and-answer set
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:qandaset"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element qandaset {
+      db.qandaset.attlist,
+      db.qandaset.info,
+      db.all.blocks*,
+      (db.qandadiv+ | db.qandaentry+)
+    }
+}
+div {
+  db.qandadiv.role.attribute = attribute role { text }
+  db.qandadiv.attlist =
+    db.qandadiv.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.qandadiv.info = db._info.title.only
+  db.qandadiv =
+    
+    ## A titled division in a qandaset
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:qandadiv"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element qandadiv {
+      db.qandadiv.attlist,
+      db.qandadiv.info,
+      db.all.blocks*,
+      (db.qandadiv+ | db.qandaentry+)
+    }
+}
+div {
+  db.qandaentry.role.attribute = attribute role { text }
+  db.qandaentry.attlist =
+    db.qandaentry.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.qandaentry.info = db._info.title.only
+  db.qandaentry =
+    
+    ## A question/answer set within a qandaset
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:qandaentry"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element qandaentry {
+      db.qandaentry.attlist, db.qandaentry.info, db.question, db.answer*
+    }
+}
+div {
+  db.question.role.attribute = attribute role { text }
+  db.question.attlist =
+    db.question.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.question =
+    
+    ## A question in a qandaset
+    element question { db.question.attlist, db.label?, db.all.blocks+ }
+}
+div {
+  db.answer.role.attribute = attribute role { text }
+  db.answer.attlist =
+    db.answer.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.answer =
+    
+    ## An answer to a question posed in a qandaset
+    element answer { db.answer.attlist, db.label?, db.all.blocks+ }
+}
+div {
+  db.label.role.attribute = attribute role { text }
+  db.label.attlist =
+    db.label.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.label =
+    
+    ## A label on a question or answer
+    element label { db.label.attlist, db._text }
+}
+db.math.inlines = db.inlineequation
+db.equation.content = (db.mediaobject+ | db.mathphrase+) | db._any.mml+
+db.inlineequation.content =
+  (db.inlinemediaobject+ | db.mathphrase+) | db._any.mml+
+div {
+  db.equation.role.attribute = attribute role { text }
+  db.equation.label.attribute = db.label.attribute
+  db.equation.attlist =
+    db.equation.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.equation.label.attribute?
+    & db.pgwide.attribute?
+    & db.floatstyle.attribute?
+  db.equation.info = db._info.title.only
+  db.equation =
+    
+    ## A displayed mathematical equation
+    [
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:equation"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:example)"
+            "example must not occur among the children or descendants of equation"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:equation"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:figure)"
+            "figure must not occur among the children or descendants of equation"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:equation"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:table)"
+            "table must not occur among the children or descendants of equation"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:equation"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:equation)"
+            "equation must not occur among the children or descendants of equation"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:equation"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:caution)"
+            "caution must not occur among the children or descendants of equation"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:equation"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:important)"
+            "important must not occur among the children or descendants of equation"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:equation"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:note)"
+            "note must not occur among the children or descendants of equation"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:equation"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:tip)"
+            "tip must not occur among the children or descendants of equation"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:equation"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:warning)"
+            "warning must not occur among the children or descendants of equation"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:equation"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element equation {
+      db.equation.attlist,
+      db.equation.info,
+      db.alt?,
+      db.equation.content,
+      db.caption?
+    }
+}
+div {
+  db.informalequation.role.attribute = attribute role { text }
+  db.informalequation.attlist =
+    db.informalequation.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.pgwide.attribute?
+    & db.floatstyle.attribute?
+  db.informalequation.info = db._info.title.forbidden
+  db.informalequation =
+    
+    ## A displayed mathematical equation without a title
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:informalequation"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element informalequation {
+      db.informalequation.attlist,
+      db.informalequation.info,
+      db.alt?,
+      db.equation.content,
+      db.caption?
+    }
+}
+div {
+  db.inlineequation.role.attribute = attribute role { text }
+  db.inlineequation.attlist =
+    db.inlineequation.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.inlineequation =
+    
+    ## A mathematical equation or expression occurring inline
+    element inlineequation {
+      db.inlineequation.attlist, db.alt?, db.inlineequation.content
+    }
+}
+div {
+  db.mathphrase.role.attribute = attribute role { text }
+  db.mathphrase.attlist =
+    db.mathphrase.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.mathphrase =
+    
+    ## A mathematical phrase that can be represented with ordinary text and a small amount of markup
+    element mathphrase {
+      db.mathphrase.attlist,
+      (db._text | db.ubiq.inlines | db._emphasis)*
+    }
+}
+db.imagedata.mathml.content = db._any.mml
+div {
+  db.imagedata.mathml.role.attribute = attribute role { text }
+  db.imagedata.mathml.attlist =
+    db.imagedata.mathml.role.attribute?
+    & db.common.attributes
+    & 
+      ## Specifies that the format of the data is MathML
+      attribute format {
+        
+        ## Specifies MathML.
+        "mathml"
+      }?
+    & db.imagedata.align.attribute?
+    & db.imagedata.valign.attribute?
+    & db.imagedata.width.attribute?
+    & db.imagedata.contentwidth.attribute?
+    & db.imagedata.scalefit.attribute?
+    & db.imagedata.scale.attribute?
+    & db.imagedata.depth.attribute?
+    & db.imagedata.contentdepth.attribute?
+  db.imagedata.mathml.info = db._info.title.forbidden
+  db.imagedata.mathml =
+    
+    ## A MathML expression in a media object
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:imagedata"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element imagedata {
+      db.imagedata.mathml.attlist,
+      db.imagedata.mathml.info,
+      db.imagedata.mathml.content+
+    }
+}
+div {
+  db._any.mml =
+    
+    ## Any element from the MathML namespace
+    element mml:* { (db._any.attribute | text | db._any)* }
+}
+db.imagedata.svg.content = db._any.svg
+div {
+  db.imagedata.svg.role.attribute = attribute role { text }
+  db.imagedata.svg.attlist =
+    db.imagedata.svg.role.attribute?
+    & db.common.attributes
+    & 
+      ## Specifies that the format of the data is SVG
+      attribute format {
+        
+        ## Specifies SVG.
+        "svg"
+      }?
+    & db.imagedata.align.attribute?
+    & db.imagedata.valign.attribute?
+    & db.imagedata.width.attribute?
+    & db.imagedata.contentwidth.attribute?
+    & db.imagedata.scalefit.attribute?
+    & db.imagedata.scale.attribute?
+    & db.imagedata.depth.attribute?
+    & db.imagedata.contentdepth.attribute?
+  db.imagedata.svg.info = db._info.title.forbidden
+  db.imagedata.svg =
+    
+    ## An SVG drawing in a media object
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:imagedata"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element imagedata {
+      db.imagedata.svg.attlist,
+      db.imagedata.svg.info,
+      db.imagedata.svg.content+
+    }
+}
+div {
+  db._any.svg =
+    
+    ## Any element from the SVG namespace
+    element svg:* { (db._any.attribute | text | db._any)* }
+}
+db.markup.inlines =
+  db.tag
+  | db.markup
+  | db.token
+  | db.symbol
+  | db.literal
+  | db.code
+  | db.constant
+  | db.email
+  | db.uri
+div {
+  db.markup.role.attribute = attribute role { text }
+  db.markup.attlist =
+    db.markup.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.markup =
+    
+    ## A string of formatting markup in text that is to be represented literally
+    element markup { db.markup.attlist, db._text }
+}
+div {
+  db.tag.role.attribute = attribute role { text }
+  db.tag.class.enumeration =
+    
+    ## An attribute
+    "attribute"
+    | 
+      ## An attribute value
+      "attvalue"
+    | 
+      ## An element
+      "element"
+    | 
+      ## An empty element tag
+      "emptytag"
+    | 
+      ## An end tag
+      "endtag"
+    | 
+      ## A general entity
+      "genentity"
+    | 
+      ## The local name part of a qualified name
+      "localname"
+    | 
+      ## A namespace
+      "namespace"
+    | 
+      ## A numeric character reference
+      "numcharref"
+    | 
+      ## A parameter entity
+      "paramentity"
+    | 
+      ## A processing instruction
+      "pi"
+    | 
+      ## The prefix part of a qualified name
+      "prefix"
+    | 
+      ## An SGML comment
+      "comment"
+    | 
+      ## A start tag
+      "starttag"
+    | 
+      ## An XML processing instruction
+      "xmlpi"
+  db.tag.class.attribute =
+    
+    ## Identifies the nature of the tag content
+    attribute class { db.tag.class.enumeration }
+  db.tag.namespace.attribute =
+    
+    ## Identifies the namespace of the tag content
+    attribute namespace { xsd:anyURI }
+  db.tag.attlist =
+    db.tag.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.tag.class.attribute?
+    & db.tag.namespace.attribute?
+  db.tag =
+    
+    ## A component of XML (or SGML) markup
+    element tag { db.tag.attlist, (db._text | db.tag)* }
+}
+div {
+  db.symbol.class.attribute =
+    
+    ## Identifies the class of symbol
+    attribute class {
+      
+      ## The value is a limit of some kind
+      "limit"
+    }
+  db.symbol.role.attribute = attribute role { text }
+  db.symbol.attlist =
+    db.symbol.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.symbol.class.attribute?
+  db.symbol =
+    
+    ## A name that is replaced by a value before processing
+    element symbol { db.symbol.attlist, db._text }
+}
+div {
+  db.token.role.attribute = attribute role { text }
+  db.token.attlist =
+    db.token.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.token =
+    
+    ## A unit of information
+    element token { db.token.attlist, db._text }
+}
+div {
+  db.literal.role.attribute = attribute role { text }
+  db.literal.attlist =
+    db.literal.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.literal =
+    
+    ## Inline text that is some literal value
+    element literal { db.literal.attlist, db._text }
+}
+div {
+  code.language.attribute =
+    
+    ## Identifies the (computer) language of the code fragment
+    attribute language { text }
+  db.code.role.attribute = attribute role { text }
+  db.code.attlist =
+    db.code.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & code.language.attribute?
+  db.code =
+    
+    ## An inline code fragment
+    element code {
+      db.code.attlist, (db.programming.inlines | db._text)*
+    }
+}
+div {
+  db.constant.class.attribute =
+    
+    ## Identifies the class of constant
+    attribute class {
+      
+      ## The value is a limit of some kind
+      "limit"
+    }
+  db.constant.role.attribute = attribute role { text }
+  db.constant.attlist =
+    db.constant.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.constant.class.attribute?
+  db.constant =
+    
+    ## A programming or system constant
+    element constant { db.constant.attlist, db._text }
+}
+div {
+  db.productname.role.attribute = attribute role { text }
+  db.productname.class.enumeration =
+    
+    ## A name with a copyright
+    "copyright"
+    | 
+      ## A name with a registered copyright
+      "registered"
+    | 
+      ## A name of a service
+      "service"
+    | 
+      ## A name which is trademarked
+      "trade"
+  db.productname.class.attribute =
+    
+    ## Specifies the class of product name
+    attribute class { db.productname.class.enumeration }
+  db.productname.attlist =
+    db.productname.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.productname.class.attribute?
+  db.productname =
+    
+    ## The formal name of a product
+    element productname { db.productname.attlist, db._text }
+}
+div {
+  db.productnumber.role.attribute = attribute role { text }
+  db.productnumber.attlist =
+    db.productnumber.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.productnumber =
+    
+    ## A number assigned to a product
+    element productnumber { db.productnumber.attlist, db._text }
+}
+div {
+  db.database.class.enumeration =
+    
+    ## An alternate or secondary key
+    "altkey"
+    | 
+      ## A constraint
+      "constraint"
+    | 
+      ## A data type
+      "datatype"
+    | 
+      ## A field
+      "field"
+    | 
+      ## A foreign key
+      "foreignkey"
+    | 
+      ## A group
+      "group"
+    | 
+      ## An index
+      "index"
+    | 
+      ## The first or primary key
+      "key1"
+    | 
+      ## An alternate or secondary key
+      "key2"
+    | 
+      ## A name
+      "name"
+    | 
+      ## The primary key
+      "primarykey"
+    | 
+      ## A (stored) procedure
+      "procedure"
+    | 
+      ## A record
+      "record"
+    | 
+      ## A rule
+      "rule"
+    | 
+      ## The secondary key
+      "secondarykey"
+    | 
+      ## A table
+      "table"
+    | 
+      ## A user
+      "user"
+    | 
+      ## A view
+      "view"
+  db.database.class.attribute =
+    
+    ## Identifies the class of database artifact
+    attribute class { db.database.class.enumeration }
+  db.database.role.attribute = attribute role { text }
+  db.database.attlist =
+    db.database.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.database.class.attribute?
+  db.database =
+    
+    ## The name of a database, or part of a database
+    element database { db.database.attlist, db._text }
+}
+div {
+  db.application.class.enumeration =
+    
+    ## A hardware application
+    "hardware"
+    | 
+      ## A software application
+      "software"
+  db.application.class.attribute =
+    
+    ## Identifies the class of application
+    attribute class { db.application.class.enumeration }
+  db.application.role.attribute = attribute role { text }
+  db.application.attlist =
+    db.application.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.application.class.attribute?
+  db.application =
+    
+    ## The name of a software program
+    element application { db.application.attlist, db._text }
+}
+div {
+  db.hardware.role.attribute = attribute role { text }
+  db.hardware.attlist =
+    db.hardware.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.hardware =
+    
+    ## A physical part of a computer system
+    element hardware { db.hardware.attlist, db._text }
+}
+db.gui.inlines =
+  db.guiicon
+  | db.guibutton
+  | db.guimenuitem
+  | db.guimenu
+  | db.guisubmenu
+  | db.guilabel
+  | db.menuchoice
+  | db.mousebutton
+div {
+  db.guibutton.role.attribute = attribute role { text }
+  db.guibutton.attlist =
+    db.guibutton.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.guibutton =
+    
+    ## The text on a button in a GUI
+    element guibutton {
+      db.guibutton.attlist,
+      (db._text | db.accel | db.superscript | db.subscript)*
+    }
+}
+div {
+  db.guiicon.role.attribute = attribute role { text }
+  db.guiicon.attlist =
+    db.guiicon.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.guiicon =
+    
+    ## Graphic and/or text appearing as a icon in a GUI
+    element guiicon {
+      db.guiicon.attlist,
+      (db._text | db.accel | db.superscript | db.subscript)*
+    }
+}
+div {
+  db.guilabel.role.attribute = attribute role { text }
+  db.guilabel.attlist =
+    db.guilabel.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.guilabel =
+    
+    ## The text of a label in a GUI
+    element guilabel {
+      db.guilabel.attlist,
+      (db._text | db.accel | db.superscript | db.subscript)*
+    }
+}
+div {
+  db.guimenu.role.attribute = attribute role { text }
+  db.guimenu.attlist =
+    db.guimenu.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.guimenu =
+    
+    ## The name of a menu in a GUI
+    element guimenu {
+      db.guimenu.attlist,
+      (db._text | db.accel | db.superscript | db.subscript)*
+    }
+}
+div {
+  db.guimenuitem.role.attribute = attribute role { text }
+  db.guimenuitem.attlist =
+    db.guimenuitem.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.guimenuitem =
+    
+    ## The name of a terminal menu item in a GUI
+    element guimenuitem {
+      db.guimenuitem.attlist,
+      (db._text | db.accel | db.superscript | db.subscript)*
+    }
+}
+div {
+  db.guisubmenu.role.attribute = attribute role { text }
+  db.guisubmenu.attlist =
+    db.guisubmenu.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.guisubmenu =
+    
+    ## The name of a submenu in a GUI
+    element guisubmenu {
+      db.guisubmenu.attlist,
+      (db._text | db.accel | db.superscript | db.subscript)*
+    }
+}
+div {
+  db.menuchoice.role.attribute = attribute role { text }
+  db.menuchoice.attlist =
+    db.menuchoice.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.menuchoice =
+    
+    ## A selection or series of selections from a menu
+    element menuchoice {
+      db.menuchoice.attlist,
+      db.shortcut?,
+      (db.guibutton
+       | db.guiicon
+       | db.guilabel
+       | db.guimenu
+       | db.guimenuitem
+       | db.guisubmenu)+
+    }
+}
+div {
+  db.mousebutton.role.attribute = attribute role { text }
+  db.mousebutton.attlist =
+    db.mousebutton.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.mousebutton =
+    
+    ## The conventional name of a mouse button
+    element mousebutton { db.mousebutton.attlist, db._text }
+}
+db.keyboard.inlines =
+  db.keycombo
+  | db.keycap
+  | db.keycode
+  | db.keysym
+  | db.shortcut
+  | db.accel
+div {
+  db.keycap.function.enumeration =
+    
+    ## The "Alt" key
+    "alt"
+    | 
+      ## The "Backspace" key
+      "backspace"
+    | 
+      ## The "Command" key
+      "command"
+    | 
+      ## The "Control" key
+      "control"
+    | 
+      ## The "Delete" key
+      "delete"
+    | 
+      ## The down arrow
+      "down"
+    | 
+      ## The "End" key
+      "end"
+    | 
+      ## The "Enter" or "Return" key
+      "enter"
+    | 
+      ## The "Escape" key
+      "escape"
+    | 
+      ## The "Home" key
+      "home"
+    | 
+      ## The "Insert" key
+      "insert"
+    | 
+      ## The left arrow
+      "left"
+    | 
+      ## The "Meta" key
+      "meta"
+    | 
+      ## The "Option" key
+      "option"
+    | 
+      ## The page down key
+      "pagedown"
+    | 
+      ## The page up key
+      "pageup"
+    | 
+      ## The right arrow
+      "right"
+    | 
+      ## The "Shift" key
+      "shift"
+    | 
+      ## The spacebar
+      "space"
+    | 
+      ## The "Tab" key
+      "tab"
+    | 
+      ## The up arrow
+      "up"
+  db.keycap.function-enum.attribute =
+    
+    ## Identifies the function key
+    attribute function { db.keycap.function.enumeration }?
+  db.keycap.function-other.attributes =
+    
+    ## Identifies the function key
+    attribute function {
+      
+      ## Indicates a non-standard function key
+      "other"
+    }?,
+    
+    ## Specifies a keyword that identifies the non-standard key
+    attribute otherfunction { text }
+  db.keycap.function.attrib =
+    db.keycap.function-enum.attribute
+    | db.keycap.function-other.attributes
+  db.keycap.role.attribute = attribute role { text }
+  db.keycap.attlist =
+    db.keycap.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.keycap.function.attrib
+  db.keycap =
+    
+    ## The text printed on a key on a keyboard
+    element keycap { db.keycap.attlist, db._text }
+}
+div {
+  db.keycode.role.attribute = attribute role { text }
+  db.keycode.attlist =
+    db.keycode.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.keycode =
+    
+    ## The internal, frequently numeric, identifier for a key on a keyboard
+    element keycode { db.keycode.attlist, db._text }
+}
+db.keycombination.contentmodel =
+  (db.keycap | db.keycombo | db.keysym) | db.mousebutton
+div {
+  db.keycombo.action.enumeration =
+    
+    ## A (single) mouse click.
+    "click"
+    | 
+      ## A double mouse click.
+      "double-click"
+    | 
+      ## A mouse or key press.
+      "press"
+    | 
+      ## Sequential clicks or presses.
+      "seq"
+    | 
+      ## Simultaneous clicks or presses.
+      "simul"
+  db.keycombo.action-enum.attribute =
+    
+    ## Identifies the nature of the action taken. If keycombo
+    ##  contains more than one element, simul
+    ##  is the default, otherwise there is no default.
+    attribute action { db.keycombo.action.enumeration }?
+  db.keycombo.action-other.attributes =
+    
+    ## Identifies the nature of the action taken
+    attribute action {
+      
+      ## Indicates a non-standard action
+      "other"
+    }?,
+    
+    ## Identifies the non-standard action in some unspecified way.
+    attribute otheraction { text }
+  db.keycombo.action.attrib =
+    db.keycombo.action-enum.attribute
+    | db.keycombo.action-other.attributes
+  db.keycombo.role.attribute = attribute role { text }
+  db.keycombo.attlist =
+    db.keycombo.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.keycombo.action.attrib
+  db.keycombo =
+    
+    ## A combination of input actions
+    element keycombo {
+      db.keycombo.attlist, db.keycombination.contentmodel+
+    }
+}
+div {
+  db.keysym.role.attribute = attribute role { text }
+  db.keysym.attlist =
+    db.keysym.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.keysym =
+    
+    ## The symbolic name of a key on a keyboard
+    element keysym { db.keysym.attlist, db._text }
+}
+div {
+  db.accel.role.attribute = attribute role { text }
+  db.accel.attlist =
+    db.accel.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.accel =
+    
+    ## A graphical user interface (GUI) keyboard shortcut
+    element accel { db.accel.attlist, db._text }
+}
+div {
+  db.shortcut.action.attrib = db.keycombo.action.attrib
+  db.shortcut.role.attribute = attribute role { text }
+  db.shortcut.attlist =
+    db.shortcut.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.shortcut.action.attrib
+  db.shortcut =
+    
+    ## A key combination for an action that is also accessible through a menu
+    element shortcut {
+      db.shortcut.attlist, db.keycombination.contentmodel+
+    }
+}
+db.os.inlines =
+  db.prompt
+  | db.envar
+  | db.filename
+  | db.command
+  | db.computeroutput
+  | db.userinput
+db.computeroutput.inlines =
+  (text | db.ubiq.inlines | db.os.inlines | db.technical.inlines)
+  | db.co
+  | db.markup.inlines
+db.userinput.inlines =
+  (text | db.ubiq.inlines | db.os.inlines | db.technical.inlines)
+  | db.co
+  | db.markup.inlines
+  | db.gui.inlines
+  | db.keyboard.inlines
+db.prompt.inlines = db._text | db.co
+div {
+  db.prompt.role.attribute = attribute role { text }
+  db.prompt.attlist =
+    db.prompt.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.prompt =
+    
+    ## A character or string indicating the start of an input field in a  computer display
+    element prompt { db.prompt.attlist, db.prompt.inlines* }
+}
+div {
+  db.envar.role.attribute = attribute role { text }
+  db.envar.attlist =
+    db.envar.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.envar =
+    
+    ## A software environment variable
+    element envar { db.envar.attlist, db._text }
+}
+div {
+  db.filename.class.enumeration =
+    
+    ## A device
+    "devicefile"
+    | 
+      ## A directory
+      "directory"
+    | 
+      ## A filename extension
+      "extension"
+    | 
+      ## A header file (as for a programming language)
+      "headerfile"
+    | 
+      ## A library file
+      "libraryfile"
+    | 
+      ## A partition (as of a hard disk)
+      "partition"
+    | 
+      ## A symbolic link
+      "symlink"
+  db.filename.class.attribute =
+    
+    ## Identifies the class of filename
+    attribute class { db.filename.class.enumeration }
+  db.filename.path.attribute =
+    
+    ## Specifies the path of the filename
+    attribute path { text }
+  db.filename.role.attribute = attribute role { text }
+  db.filename.attlist =
+    db.filename.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.filename.path.attribute?
+    & db.filename.class.attribute?
+  db.filename =
+    
+    ## The name of a file
+    element filename { db.filename.attlist, db._text }
+}
+div {
+  db.command.role.attribute = attribute role { text }
+  db.command.attlist =
+    db.command.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.command =
+    
+    ## The name of an executable program or other software command
+    element command { db.command.attlist, db._text }
+}
+div {
+  db.computeroutput.role.attribute = attribute role { text }
+  db.computeroutput.attlist =
+    db.computeroutput.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.computeroutput =
+    
+    ## Data, generally text, displayed or presented by a computer
+    element computeroutput {
+      db.computeroutput.attlist, db.computeroutput.inlines*
+    }
+}
+div {
+  db.userinput.role.attribute = attribute role { text }
+  db.userinput.attlist =
+    db.userinput.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.userinput =
+    
+    ## Data entered by the user
+    element userinput { db.userinput.attlist, db.userinput.inlines* }
+}
+div {
+  db.cmdsynopsis.role.attribute = attribute role { text }
+  db.cmdsynopsis.sepchar.attribute =
+    
+    ## Specifies the character that should separate the command and its top-level arguments
+    attribute sepchar { text }
+  db.cmdsynopsis.cmdlength.attribute =
+    
+    ## Indicates the displayed length of the command; this information may be used to intelligently indent command synopses which extend beyond one line
+    attribute cmdlength { text }
+  db.cmdsynopsis.label.attribute = db.label.attribute
+  db.cmdsynopsis.attlist =
+    db.cmdsynopsis.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.cmdsynopsis.sepchar.attribute?
+    & db.cmdsynopsis.cmdlength.attribute?
+    & db.cmdsynopsis.label.attribute?
+  db.cmdsynopsis.info = db._info.title.forbidden
+  db.cmdsynopsis =
+    
+    ## A syntax summary for a software command
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:cmdsynopsis"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element cmdsynopsis {
+      db.cmdsynopsis.attlist,
+      db.cmdsynopsis.info,
+      (db.command | db.arg | db.group | db.sbr)+,
+      db.synopfragment*
+    }
+}
+db.rep.enumeration =
+  
+  ## Can not be repeated.
+  "norepeat"
+  | 
+    ## Can be repeated.
+    "repeat"
+db.rep.attribute =
+  
+  ## Indicates whether or not repetition is possible.
+  [ a:defaultValue = "norepeat" ] attribute rep { db.rep.enumeration }
+db.choice.enumeration =
+  
+  ## Formatted to indicate that it is optional.
+  "opt"
+  | 
+    ## Formatted without indication.
+    "plain"
+  | 
+    ## Formatted to indicate that it is required.
+    "req"
+db.choice.opt.attribute =
+  
+  ## Indicates optionality.
+  [ a:defaultValue = "opt" ] attribute choice { db.choice.enumeration }
+db.choice.req.attribute =
+  
+  ## Indicates optionality.
+  [ a:defaultValue = "req" ] attribute choice { db.choice.enumeration }
+div {
+  db.arg.role.attribute = attribute role { text }
+  db.arg.rep.attribute = db.rep.attribute
+  db.arg.choice.attribute = db.choice.opt.attribute
+  db.arg.attlist =
+    db.arg.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.arg.rep.attribute?
+    & db.arg.choice.attribute?
+  db.arg =
+    
+    ## An argument in a cmdsynopsis
+    element arg {
+      db.arg.attlist,
+      (db._text
+       | db.arg
+       | db.group
+       | db.option
+       | db.synopfragmentref
+       | db.sbr)*
+    }
+}
+div {
+  db.group.role.attribute = attribute role { text }
+  db.group.rep.attribute = db.rep.attribute
+  db.group.choice.attribute = db.choice.opt.attribute
+  db.group.attlist =
+    db.group.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.group.rep.attribute?
+    & db.group.choice.attribute?
+  db.group =
+    
+    ## A group of elements in a cmdsynopsis
+    element group {
+      db.group.attlist,
+      (db.arg
+       | db.group
+       | db.option
+       | db.synopfragmentref
+       | db.replaceable
+       | db.sbr)+
+    }
+}
+div {
+  db.sbr.role.attribute = attribute role { text }
+  db.sbr.attlist = db.sbr.role.attribute? & db.common.attributes
+  db.sbr =
+    
+    ## An explicit line break in a command synopsis
+    element sbr { db.sbr.attlist, empty }
+}
+div {
+  db.synopfragment.role.attribute = attribute role { text }
+  db.synopfragment.attlist =
+    db.synopfragment.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.synopfragment =
+    
+    ## A portion of a cmdsynopsis broken out from the main body of the synopsis
+    element synopfragment {
+      db.synopfragment.attlist, (db.arg | db.group)+
+    }
+}
+div {
+  db.synopfragmentref.role.attribute = attribute role { text }
+  db.synopfragmentref.attlist =
+    db.synopfragmentref.role.attribute?
+    & db.common.attributes
+    & db.linkend.attribute
+  db.synopfragmentref =
+    
+    ## A reference to a fragment of a command synopsis
+    [
+      s:pattern [
+        name = "Synopsis fragment type constraint"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:synopfragmentref"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test =
+              "local-name(//*[@xml:id=current()/@linkend]) = 'synopfragment' and namespace-uri(//*[@xml:id=current()/@linkend]) = 'http://docbook.org/ns/docbook'"
+            "@linkend on synopfragmentref must point to a synopfragment."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element synopfragmentref { db.synopfragmentref.attlist, text }
+}
+db.programming.inlines =
+  db.function
+  | db.parameter
+  | db.varname
+  | db.returnvalue
+  | db.type
+  | db.classname
+  | db.exceptionname
+  | db.interfacename
+  | db.methodname
+  | db.modifier
+  | db.initializer
+  | db.oo.inlines
+db.oo.inlines = db.ooclass | db.ooexception | db.oointerface
+db.synopsis.blocks =
+  (db.funcsynopsis
+   | db.classsynopsis
+   | db.methodsynopsis
+   | db.constructorsynopsis
+   | db.destructorsynopsis
+   | db.fieldsynopsis)
+  | db.cmdsynopsis
+div {
+  db.synopsis.role.attribute = attribute role { text }
+  db.synopsis.label.attribute = db.label.attribute
+  db.synopsis.attlist =
+    db.synopsis.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.verbatim.attributes
+    & db.synopsis.label.attribute?
+  db.synopsis =
+    
+    ## A general-purpose element for representing the syntax of commands or functions
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:synopsis"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element synopsis { db.synopsis.attlist, db.verbatim.contentmodel }
+}
+div {
+  db.funcsynopsis.role.attribute = attribute role { text }
+  db.funcsynopsis.attlist =
+    db.funcsynopsis.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.language.attribute?
+  db.funcsynopsis.info = db._info.title.forbidden
+  db.funcsynopsis =
+    
+    ## The syntax summary for a function definition
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:funcsynopsis"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element funcsynopsis {
+      db.funcsynopsis.attlist,
+      db.funcsynopsis.info,
+      (db.funcsynopsisinfo | db.funcprototype)+
+    }
+}
+div {
+  db.funcsynopsisinfo.role.attribute = attribute role { text }
+  db.funcsynopsisinfo.attlist =
+    db.funcsynopsisinfo.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.verbatim.attributes
+  db.funcsynopsisinfo =
+    
+    ## Information supplementing the funcdefs of a funcsynopsis
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:funcsynopsisinfo"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element funcsynopsisinfo {
+      db.funcsynopsisinfo.attlist, db.verbatim.contentmodel
+    }
+}
+div {
+  db.funcprototype.role.attribute = attribute role { text }
+  db.funcprototype.attlist =
+    db.funcprototype.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.funcprototype =
+    
+    ## The prototype of a function
+    element funcprototype {
+      db.funcprototype.attlist,
+      db.modifier*,
+      db.funcdef,
+      (db.void
+       | db.varargs
+       | ((db.paramdef | db.group.paramdef)+, db.varargs?)),
+      db.modifier*
+    }
+}
+div {
+  db.funcdef.role.attribute = attribute role { text }
+  db.funcdef.attlist =
+    db.funcdef.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.funcdef =
+    
+    ## A function (subroutine) name and its return type
+    element funcdef {
+      db.funcdef.attlist, (db._text | db.type | db.function)*
+    }
+}
+div {
+  db.function.role.attribute = attribute role { text }
+  db.function.attlist =
+    db.function.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.function =
+    
+    ## The name of a function or subroutine, as in a programming language
+    element function { db.function.attlist, db._text }
+}
+div {
+  db.void.role.attribute = attribute role { text }
+  db.void.attlist =
+    db.void.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.void =
+    
+    ## An empty element in a function synopsis indicating that the function in question takes no arguments
+    element void { db.void.attlist, empty }
+}
+div {
+  db.varargs.role.attribute = attribute role { text }
+  db.varargs.attlist =
+    db.varargs.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.varargs =
+    
+    ## An empty element in a function synopsis indicating a variable number of arguments
+    element varargs { db.varargs.attlist, empty }
+}
+div {
+  db.group.paramdef.role.attribute = attribute role { text }
+  db.group.paramdef.choice.attribute = db.choice.opt.attribute
+  db.group.paramdef.attlist =
+    db.group.paramdef.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.group.paramdef.choice.attribute?
+  db.group.paramdef =
+    
+    ## A group of parameters
+    element group {
+      db.group.paramdef.attlist, (db.paramdef | db.group.paramdef)+
+    }
+}
+div {
+  db.paramdef.role.attribute = attribute role { text }
+  db.paramdef.choice.enumeration =
+    
+    ## Formatted to indicate that it is optional.
+    "opt"
+    | 
+      ## Formatted to indicate that it is required.
+      "req"
+  db.paramdef.choice.attribute =
+    
+    ## Indicates optionality.
+    [ a:defaultValue = "opt" ]
+    attribute choice { db.paramdef.choice.enumeration }
+  db.paramdef.attlist =
+    db.paramdef.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.paramdef.choice.attribute?
+  db.paramdef =
+    
+    ## Information about a function parameter in a programming language
+    element paramdef {
+      db.paramdef.attlist,
+      (db._text
+       | db.initializer
+       | db.type
+       | db.parameter
+       | db.funcparams)*
+    }
+}
+div {
+  db.funcparams.role.attribute = attribute role { text }
+  db.funcparams.attlist =
+    db.funcparams.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.funcparams =
+    
+    ## Parameters for a function referenced through a function pointer in a synopsis
+    element funcparams { db.funcparams.attlist, db._text }
+}
+div {
+  db.classsynopsis.role.attribute = attribute role { text }
+  db.classsynopsis.class.enumeration =
+    
+    ## This is the synopsis of a class
+    "class"
+    | 
+      ## This is the synopsis of an interface
+      "interface"
+  db.classsynopsis.class.attribute =
+    
+    ## Specifies the nature of the synopsis
+    attribute class { db.classsynopsis.class.enumeration }
+  db.classsynopsis.attlist =
+    db.classsynopsis.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.language.attribute?
+    & db.classsynopsis.class.attribute?
+  db.classsynopsis =
+    
+    ## The syntax summary for a class definition
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:classsynopsis"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element classsynopsis {
+      db.classsynopsis.attlist,
+      db.oo.inlines+,
+      (db.classsynopsisinfo
+       | db.methodsynopsis
+       | db.constructorsynopsis
+       | db.destructorsynopsis
+       | db.fieldsynopsis)*
+    }
+}
+div {
+  db.classsynopsisinfo.role.attribute = attribute role { text }
+  db.classsynopsisinfo.attlist =
+    db.classsynopsisinfo.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.verbatim.attributes
+  db.classsynopsisinfo =
+    
+    ## Information supplementing the contents of a classsynopsis
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:classsynopsisinfo"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element classsynopsisinfo {
+      db.classsynopsisinfo.attlist, db.verbatim.contentmodel
+    }
+}
+div {
+  db.ooclass.role.attribute = attribute role { text }
+  db.ooclass.attlist =
+    db.ooclass.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.ooclass =
+    
+    ## A class in an object-oriented programming language
+    element ooclass {
+      db.ooclass.attlist, (db.package | db.modifier)*, db.classname
+    }
+}
+div {
+  db.oointerface.role.attribute = attribute role { text }
+  db.oointerface.attlist =
+    db.oointerface.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.oointerface =
+    
+    ## An interface in an object-oriented programming language
+    element oointerface {
+      db.oointerface.attlist,
+      (db.package | db.modifier)*,
+      db.interfacename
+    }
+}
+div {
+  db.ooexception.role.attribute = attribute role { text }
+  db.ooexception.attlist =
+    db.ooexception.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.ooexception =
+    
+    ## An exception in an object-oriented programming language
+    element ooexception {
+      db.ooexception.attlist,
+      (db.package | db.modifier)*,
+      db.exceptionname
+    }
+}
+db.modifier.xml.space.attribute =
+  
+  ## Can be used to indicate that whitespace in the modifier should be preserved (for multi-line annotations, for example).
+  attribute xml:space {
+    
+    ## Extra whitespace and line breaks must be preserved.
+    [
+      # Ideally the definition of xml:space used on modifier would be
+      # different from the definition used on the verbatim elements. The
+      # verbatim elements forbid the use of xml:space="default" which
+      # wouldn't be a problem on modifier. But doing that causes the
+      # generated XSD schemas to be broken so I'm just reusing the existing
+      # definition for now. It won't be backwards incompatible to fix this
+      # problem in the future.
+      #    | ## Extra whitespace and line breaks are not preserved.
+      #      "default"
+      
+    ]
+    "preserve"
+  }
+div {
+  db.modifier.role.attribute = attribute role { text }
+  db.modifier.attlist =
+    db.modifier.xml.space.attribute?
+    & db.modifier.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.modifier =
+    
+    ## Modifiers in a synopsis
+    element modifier { db.modifier.attlist, db._text }
+}
+div {
+  db.interfacename.role.attribute = attribute role { text }
+  db.interfacename.attlist =
+    db.interfacename.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.interfacename =
+    
+    ## The name of an interface
+    element interfacename { db.interfacename.attlist, db._text }
+}
+div {
+  db.exceptionname.role.attribute = attribute role { text }
+  db.exceptionname.attlist =
+    db.exceptionname.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.exceptionname =
+    
+    ## The name of an exception
+    element exceptionname { db.exceptionname.attlist, db._text }
+}
+div {
+  db.fieldsynopsis.role.attribute = attribute role { text }
+  db.fieldsynopsis.attlist =
+    db.fieldsynopsis.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.language.attribute?
+  db.fieldsynopsis =
+    
+    ## The name of a field in a class definition
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:fieldsynopsis"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element fieldsynopsis {
+      db.fieldsynopsis.attlist,
+      db.modifier*,
+      db.type?,
+      db.varname,
+      db.initializer?
+    }
+}
+div {
+  db.initializer.role.attribute = attribute role { text }
+  db.initializer.attlist =
+    db.initializer.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.initializer.inlines = db._text | db.mathphrase | db.markup.inlines
+  db.initializer =
+    
+    ## The initializer for a fieldsynopsis
+    element initializer {
+      db.initializer.attlist, db.initializer.inlines*
+    }
+}
+div {
+  db.constructorsynopsis.role.attribute = attribute role { text }
+  db.constructorsynopsis.attlist =
+    db.constructorsynopsis.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.language.attribute?
+  db.constructorsynopsis =
+    
+    ## A syntax summary for a constructor
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:constructorsynopsis"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element constructorsynopsis {
+      db.constructorsynopsis.attlist,
+      db.modifier*,
+      db.methodname?,
+      ((db.methodparam | db.group.methodparam)+ | db.void?),
+      db.exceptionname*
+    }
+}
+div {
+  db.destructorsynopsis.role.attribute = attribute role { text }
+  db.destructorsynopsis.attlist =
+    db.destructorsynopsis.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.language.attribute?
+  db.destructorsynopsis =
+    
+    ## A syntax summary for a destructor
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:destructorsynopsis"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element destructorsynopsis {
+      db.destructorsynopsis.attlist,
+      db.modifier*,
+      db.methodname?,
+      ((db.methodparam | db.group.methodparam)+ | db.void?),
+      db.exceptionname*
+    }
+}
+div {
+  db.methodsynopsis.role.attribute = attribute role { text }
+  db.methodsynopsis.attlist =
+    db.methodsynopsis.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.language.attribute?
+  db.methodsynopsis =
+    
+    ## A syntax summary for a method
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:methodsynopsis"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element methodsynopsis {
+      db.methodsynopsis.attlist,
+      db.modifier*,
+      (db.type | db.void)?,
+      db.methodname,
+      ((db.methodparam | db.group.methodparam)+ | db.void),
+      db.exceptionname*,
+      db.modifier*
+    }
+}
+div {
+  db.methodname.role.attribute = attribute role { text }
+  db.methodname.attlist =
+    db.methodname.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.methodname =
+    
+    ## The name of a method
+    element methodname { db.methodname.attlist, db._text }
+}
+div {
+  db.methodparam.role.attribute = attribute role { text }
+  db.methodparam.rep.attribute = db.rep.attribute
+  db.methodparam.choice.attribute = db.choice.req.attribute
+  db.methodparam.attlist =
+    db.methodparam.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.methodparam.rep.attribute?
+    & db.methodparam.choice.attribute?
+  db.methodparam =
+    
+    ## Parameters to a method
+    element methodparam {
+      db.methodparam.attlist,
+      db.modifier*,
+      db.type?,
+      ((db.modifier*, db.parameter, db.initializer?) | db.funcparams),
+      db.modifier*
+    }
+}
+div {
+  db.group.methodparam.role.attribute = attribute role { text }
+  db.group.methodparam.choice.attribute = db.choice.opt.attribute
+  db.group.methodparam.attlist =
+    db.group.methodparam.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.group.methodparam.choice.attribute?
+  db.group.methodparam =
+    
+    ## A group of method parameters
+    element group {
+      db.group.methodparam.attlist,
+      (db.methodparam | db.group.methodparam)+
+    }
+}
+div {
+  db.varname.role.attribute = attribute role { text }
+  db.varname.attlist =
+    db.varname.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.varname =
+    
+    ## The name of a variable
+    element varname { db.varname.attlist, db._text }
+}
+div {
+  db.returnvalue.role.attribute = attribute role { text }
+  db.returnvalue.attlist =
+    db.returnvalue.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.returnvalue =
+    
+    ## The value returned by a function
+    element returnvalue { db.returnvalue.attlist, db._text }
+}
+div {
+  db.type.role.attribute = attribute role { text }
+  db.type.attlist =
+    db.type.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.type =
+    
+    ## The classification of a value
+    element type { db.type.attlist, db._text }
+}
+div {
+  db.classname.role.attribute = attribute role { text }
+  db.classname.attlist =
+    db.classname.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.classname =
+    
+    ## The name of a class, in the object-oriented programming sense
+    element classname { db.classname.attlist, db._text }
+}
+div {
+  db.programlisting.role.attribute = attribute role { text }
+  db.programlisting.width.attribute = db.width.characters.attribute
+  db.programlisting.attlist =
+    db.programlisting.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.verbatim.attributes
+    & db.programlisting.width.attribute?
+  db.programlisting =
+    
+    ## A literal listing of all or part of a program
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:programlisting"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element programlisting {
+      db.programlisting.attlist, db.verbatim.contentmodel
+    }
+}
+db.admonition.blocks =
+  db.caution | db.important | db.note | db.tip | db.warning
+db.admonition.contentmodel = db._info.title.only, db.all.blocks+
+div {
+  db.caution.role.attribute = attribute role { text }
+  db.caution.attlist =
+    db.caution.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.caution =
+    
+    ## A note of caution
+    [
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:caution"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:caution)"
+            "caution must not occur among the children or descendants of caution"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:caution"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:important)"
+            "important must not occur among the children or descendants of caution"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:caution"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:note)"
+            "note must not occur among the children or descendants of caution"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:caution"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:tip)"
+            "tip must not occur among the children or descendants of caution"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:caution"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:warning)"
+            "warning must not occur among the children or descendants of caution"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:caution"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element caution { db.caution.attlist, db.admonition.contentmodel }
+}
+div {
+  db.important.role.attribute = attribute role { text }
+  db.important.attlist =
+    db.important.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.important =
+    
+    ## An admonition set off from the text
+    [
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:important"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:caution)"
+            "caution must not occur among the children or descendants of important"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:important"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:important)"
+            "important must not occur among the children or descendants of important"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:important"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:note)"
+            "note must not occur among the children or descendants of important"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:important"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:tip)"
+            "tip must not occur among the children or descendants of important"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:important"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:warning)"
+            "warning must not occur among the children or descendants of important"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:important"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element important {
+      db.important.attlist, db.admonition.contentmodel
+    }
+}
+div {
+  db.note.role.attribute = attribute role { text }
+  db.note.attlist =
+    db.note.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.note =
+    
+    ## A message set off from the text
+    [
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:note"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:caution)"
+            "caution must not occur among the children or descendants of note"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:note"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:important)"
+            "important must not occur among the children or descendants of note"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:note"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:note)"
+            "note must not occur among the children or descendants of note"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:note"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:tip)"
+            "tip must not occur among the children or descendants of note"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:note"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:warning)"
+            "warning must not occur among the children or descendants of note"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:note"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element note { db.note.attlist, db.admonition.contentmodel }
+}
+div {
+  db.tip.role.attribute = attribute role { text }
+  db.tip.attlist =
+    db.tip.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.tip =
+    
+    ## A suggestion to the user, set off from the text
+    [
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:tip"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:caution)"
+            "caution must not occur among the children or descendants of tip"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:tip"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:important)"
+            "important must not occur among the children or descendants of tip"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:tip"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:note)"
+            "note must not occur among the children or descendants of tip"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:tip"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:tip)"
+            "tip must not occur among the children or descendants of tip"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:tip"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:warning)"
+            "warning must not occur among the children or descendants of tip"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:tip"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element tip { db.tip.attlist, db.admonition.contentmodel }
+}
+div {
+  db.warning.role.attribute = attribute role { text }
+  db.warning.attlist =
+    db.warning.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.warning =
+    
+    ## An admonition set off from the text
+    [
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:warning"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:caution)"
+            "caution must not occur among the children or descendants of warning"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:warning"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:important)"
+            "important must not occur among the children or descendants of warning"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:warning"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:note)"
+            "note must not occur among the children or descendants of warning"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:warning"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:tip)"
+            "tip must not occur among the children or descendants of warning"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Element exclusion"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "db:warning"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "not(.//db:warning)"
+            "warning must not occur among the children or descendants of warning"
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:warning"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element warning { db.warning.attlist, db.admonition.contentmodel }
+}
+db.error.inlines =
+  db.errorcode | db.errortext | db.errorname | db.errortype
+div {
+  db.errorcode.role.attribute = attribute role { text }
+  db.errorcode.attlist =
+    db.errorcode.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.errorcode =
+    
+    ## An error code
+    element errorcode { db.errorcode.attlist, db._text }
+}
+div {
+  db.errorname.role.attribute = attribute role { text }
+  db.errorname.attlist =
+    db.errorname.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.errorname =
+    
+    ## An error name
+    element errorname { db.errorname.attlist, db._text }
+}
+div {
+  db.errortext.role.attribute = attribute role { text }
+  db.errortext.attlist =
+    db.errortext.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.errortext =
+    
+    ## An error message.
+    element errortext { db.errortext.attlist, db._text }
+}
+div {
+  db.errortype.role.attribute = attribute role { text }
+  db.errortype.attlist =
+    db.errortype.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.errortype =
+    
+    ## The classification of an error message
+    element errortype { db.errortype.attlist, db._text }
+}
+db.systemitem.inlines = db._text | db.co
+div {
+  db.systemitem.class.enumeration =
+    
+    ## A daemon or other system process (syslogd)
+    "daemon"
+    | 
+      ## A domain name (example.com)
+      "domainname"
+    | 
+      ## An ethernet address (00:05:4E:49:FD:8E)
+      "etheraddress"
+    | 
+      ## An event of some sort (SIGHUP)
+      "event"
+    | 
+      ## An event handler of some sort (hangup)
+      "eventhandler"
+    | 
+      ## A filesystem (ext3)
+      "filesystem"
+    | 
+      ## A fully qualified domain name (my.example.com)
+      "fqdomainname"
+    | 
+      ## A group name (wheel)
+      "groupname"
+    | 
+      ## An IP address (127.0.0.1)
+      "ipaddress"
+    | 
+      ## A library (libncurses)
+      "library"
+    | 
+      ## A macro
+      "macro"
+    | 
+      ## A netmask (255.255.255.192)
+      "netmask"
+    | 
+      ## A newsgroup (comp.text.xml)
+      "newsgroup"
+    | 
+      ## An operating system name (Hurd)
+      "osname"
+    | 
+      ## A process (gnome-cups-icon)
+      "process"
+    | 
+      ## A protocol (ftp)
+      "protocol"
+    | 
+      ## A resource
+      "resource"
+    | 
+      ## A security context (a role, permission, or security token, for example)
+      "securitycontext"
+    | 
+      ## A server (mail.example.com)
+      "server"
+    | 
+      ## A service (ppp)
+      "service"
+    | 
+      ## A system name (hephaistos)
+      "systemname"
+    | 
+      ## A user name (ndw)
+      "username"
+  db.systemitem.class-enum.attribute =
+    
+    ## Identifies the nature of the system item
+    attribute class { db.systemitem.class.enumeration }?
+  db.systemitem.class-other.attribute =
+    
+    ## Identifies the nature of the non-standard system item
+    attribute otherclass { xsd:NMTOKEN }
+  db.systemitem.class-other.attributes =
+    
+    ## Identifies the kind of systemitemgraphic identifier
+    attribute class {
+      
+      ## Indicates that the system item is some 'other' kind.
+      "other"
+    }
+    & db.systemitem.class-other.attribute
+  db.systemitem.class.attribute =
+    db.systemitem.class-enum.attribute
+    | db.systemitem.class-other.attributes
+  db.systemitem.role.attribute = attribute role { text }
+  db.systemitem.attlist =
+    db.systemitem.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.systemitem.class.attribute?
+  db.systemitem =
+    
+    ## A system-related item or term
+    element systemitem { db.systemitem.attlist, db.systemitem.inlines* }
+}
+div {
+  db.option.role.attribute = attribute role { text }
+  db.option.attlist =
+    db.option.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.option =
+    
+    ## An option for a software command
+    element option { db.option.attlist, db._text }
+}
+div {
+  db.optional.role.attribute = attribute role { text }
+  db.optional.attlist =
+    db.optional.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.optional =
+    
+    ## Optional information
+    element optional { db.optional.attlist, db._text }
+}
+div {
+  db.property.role.attribute = attribute role { text }
+  db.property.attlist =
+    db.property.role.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+  db.property =
+    
+    ## A unit of data associated with some part of a computer system
+    element property { db.property.attlist, db._text }
+}
+div {
+  db.topic.status.attribute = db.status.attribute
+  db.topic.role.attribute = attribute role { text }
+  db.topic.type.attribute =
+    
+    ## Identifies the topic type
+    attribute type { text }
+  db.topic.attlist =
+    db.topic.role.attribute?
+    & db.topic.type.attribute?
+    & db.common.attributes
+    & db.common.linking.attributes
+    & db.label.attribute?
+    & db.topic.status.attribute?
+  db.topic.info = db._info.title.req
+  db.topic =
+    
+    ## A modular unit of documentation not part of any particular narrative flow
+    [
+      s:pattern [
+        name = "Root must have version"
+        "\x{a}" ~
+        "               "
+        s:rule [
+          context = "/db:topic"
+          "\x{a}" ~
+          "                  "
+          s:assert [
+            test = "@version"
+            "If this element is the root element, it must have a version attribute."
+          ]
+          "\x{a}" ~
+          "               "
+        ]
+        "\x{a}" ~
+        "            "
+      ]
+    ]
+    element topic {
+      db.topic.attlist,
+      db.topic.info,
+      db.navigation.components*,
+      db.toplevel.blocks.or.sections,
+      db.navigation.components*
+    }
+}
