Index: general.ent
===================================================================
--- general.ent	(revision eccffcef8c60e63e7183e04539d89e8e0b1d23b8)
+++ general.ent	(revision f6be42d0d7af75f2b7b2b9bf212b7e61a95cffde)
@@ -1,5 +1,5 @@
 <!-- $LastChangedBy$ $Date$ -->
 
-<!ENTITY day          "13">                   <!-- Always 2 digits -->
+<!ENTITY day          "14">                   <!-- Always 2 digits -->
 <!ENTITY month        "09">                   <!-- Always 2 digits -->
 <!ENTITY year         "2019">
@@ -7,5 +7,5 @@
 <!ENTITY copyholder   "The BLFS Development Team">
 <!ENTITY version      "&year;-&month;-&day;">
-<!ENTITY releasedate  "September 13th, &year;">
+<!ENTITY releasedate  "September 14th, &year;">
 <!ENTITY pubdate      "&year;-&month;-&day;"> <!-- metadata req. by TLDP -->
 <!ENTITY blfs-version "svn">                  <!-- svn|[release #] -->
Index: introduction/welcome/changelog.xml
===================================================================
--- introduction/welcome/changelog.xml	(revision eccffcef8c60e63e7183e04539d89e8e0b1d23b8)
+++ introduction/welcome/changelog.xml	(revision f6be42d0d7af75f2b7b2b9bf212b7e61a95cffde)
@@ -44,4 +44,14 @@
 
     <listitem>
+      <para>September 14th, 2019</para>
+      <itemizedlist>
+        <listitem>
+          <para>[dj] - Added docbook-xml-5.0 and docbook-xml-5.1. Fixes
+          <ulink url="&blfs-ticket-root;3717">#3717</ulink>.</para>
+        </listitem>
+      </itemizedlist>
+    </listitem>
+
+    <listitem>
       <para>September 13th, 2019</para>
       <itemizedlist>
Index: pst/sgml/sgml-common.xml
===================================================================
--- pst/sgml/sgml-common.xml	(revision eccffcef8c60e63e7183e04539d89e8e0b1d23b8)
+++ pst/sgml/sgml-common.xml	(revision f6be42d0d7af75f2b7b2b9bf212b7e61a95cffde)
@@ -199,5 +199,5 @@
           SDATA entries.</para>
           <indexterm zone="sgml-common SGML-entities">
-            <primary sortas="g-sgml-entities-files">SGML entities files</primary>
+            <primary sortas="g-SGML-ENT-files">SGML entity files</primary>
           </indexterm>
         </listitem>
@@ -210,5 +210,5 @@
           representation of the Unicode character number.</para>
           <indexterm zone="sgml-common XML-entities">
-            <primary sortas="g-xml-entities-files">XML entities files</primary>
+            <primary sortas="g-XML-ENT-files">XML entity files</primary>
           </indexterm>
         </listitem>
Index: pst/xml/docbook-xsl.xml
===================================================================
--- pst/xml/docbook-xsl.xml	(revision eccffcef8c60e63e7183e04539d89e8e0b1d23b8)
+++ pst/xml/docbook-xsl.xml	(revision f6be42d0d7af75f2b7b2b9bf212b7e61a95cffde)
@@ -251,11 +251,9 @@
 
     <segmentedlist>
-      <segtitle>Installed Programs</segtitle>
-      <segtitle>Installed Libraries</segtitle>
+      <segtitle>Installed Files</segtitle>
       <segtitle>Installed Directories</segtitle>
 
       <seglistitem>
-        <seg>None</seg>
-        <seg>None</seg>
+        <seg>/usr/share/xml/docbook/xsl-stylesheets-&docbook-xsl-version;/*/*.xsl</seg>
         <seg>/usr/share/xml/docbook/xsl-stylesheets-&docbook-xsl-version; and
         /usr/share/doc/docbook-xsl-&docbook-xsl-version;</seg>
@@ -263,4 +261,23 @@
     </segmentedlist>
 
+    <variablelist>
+      <bridgehead renderas="sect3">Short Descriptions</bridgehead>
+      <?dbfo list-presentation="list"?>
+      <?dbhtml list-presentation="table"?>
+
+      <varlistentry id="xsl-stylesheets">
+        <term><filename>XSL Stylesheets</filename></term>
+        <listitem>
+          <para>
+            are used for performing transformations on XML files.
+          </para>
+          <indexterm zone="docbook-xsl xsl-stylesheets">
+            <primary sortas="g-XSL-Stylesheets">XSL Stylesheets</primary>
+          </indexterm>
+        </listitem>
+      </varlistentry>
+
+    </variablelist>
+
   </sect2>
 
Index: pst/xml/docbook.xml
===================================================================
--- pst/xml/docbook.xml	(revision eccffcef8c60e63e7183e04539d89e8e0b1d23b8)
+++ pst/xml/docbook.xml	(revision f6be42d0d7af75f2b7b2b9bf212b7e61a95cffde)
@@ -257,5 +257,5 @@
           <filename>XML</filename> files.</para>
           <indexterm zone="DocBook DTD-files">
-            <primary sortas="g-DTD-files">DTD Files</primary>
+            <primary sortas="g-XML-DTD-files">XML DTD Files</primary>
           </indexterm>
         </listitem>
@@ -268,5 +268,5 @@
           are sourced into the <filename>DTD</filename> files.</para>
           <indexterm zone="DocBook MOD-files">
-            <primary sortas="g-MOD-files">MOD files</primary>
+            <primary sortas="g-XML-MOD-files">XML MOD files</primary>
           </indexterm>
         </listitem>
@@ -279,5 +279,5 @@
           HTML.</para>
           <indexterm zone="DocBook ENT-files">
-            <primary sortas="g-ENT-files">ENT-files</primary>
+            <primary sortas="g-XML-ENT-files">XML entity files</primary>
           </indexterm>
         </listitem>
Index: pst/xml/docbook5.xml
===================================================================
--- pst/xml/docbook5.xml	(revision f6be42d0d7af75f2b7b2b9bf212b7e61a95cffde)
+++ pst/xml/docbook5.xml	(revision f6be42d0d7af75f2b7b2b9bf212b7e61a95cffde)
@@ -0,0 +1,394 @@
+<?xml version="1.0" encoding="ISO-8859-1"?>
+<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
+   "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
+  <!ENTITY % general-entities SYSTEM "../../general.ent">
+  %general-entities;
+
+  <!ENTITY docbook5-download-http "https://docbook.org/xml/5.0/docbook-5.0.zip">
+  <!ENTITY docbook5-download-ftp  " ">
+  <!ENTITY docbook5-md5sum        "2411c19ed4fb141f3fa3d389fae40736">
+  <!ENTITY docbook5-size          "820 KB">
+  <!ENTITY docbook5-buildsize     "6.2 MB">
+  <!ENTITY docbook5-time          "0.1 SBU">
+]>
+
+<sect1 id="docbook5" xreflabel="docbook-xml-5.0">
+  <?dbhtml filename="docbook5.html"?>
+
+  <sect1info>
+    <othername>$LastChangedBy$</othername>
+    <date>$Date$</date>
+  </sect1info>
+
+  <title>docbook-xml-5.0</title>
+
+  <indexterm zone="docbook5">
+    <primary sortas="a-DocBook5-XML-DTD">DocBook XML DTD and Schemas 5.0</primary>
+  </indexterm>
+
+  <sect2 role="package">
+    <title>Introduction to DocBook XML DTD and Schemas 5.0</title>
+
+    <para>
+      The <application>DocBook XML DTD and Schemas</application>-5.0 package
+      contains document type definitions and schemas for verification of XML
+      data files against the DocBook rule set. These are useful for structuring
+      books and software documentation to a standard allowing you to utilize
+      transformations already written for that standard. In addition to
+      providing a DTD, version 5 introduced the RelaxNG schema and Schematron
+      rules, and is incompatible with previous versions of DocBook XML.
+    </para>
+
+    &lfs90_checked;
+
+    <bridgehead renderas="sect3">Package Information</bridgehead>
+    <itemizedlist spacing="compact">
+      <listitem>
+        <para>Download (HTTP): <ulink url="&docbook5-download-http;"/></para>
+      </listitem>
+      <listitem>
+        <para>Download (FTP): <ulink url="&docbook5-download-ftp;"/></para>
+      </listitem>
+      <listitem>
+        <para>Download MD5 sum: &docbook5-md5sum;</para>
+      </listitem>
+      <listitem>
+        <para>Download size: &docbook5-size;</para>
+      </listitem>
+      <listitem>
+        <para>Estimated disk space required: &docbook5-buildsize;</para>
+      </listitem>
+      <listitem>
+        <para>Estimated build time: &docbook5-time;</para>
+      </listitem>
+    </itemizedlist>
+
+    <bridgehead renderas="sect3">DocBook XML DTD and Schemas 5.0 Dependencies</bridgehead>
+
+    <bridgehead renderas="sect4">Required</bridgehead>
+    <para role="required">
+      <xref linkend="libxml2"/>,
+      <xref linkend="sgml-common"/>, and
+      <xref linkend="unzip"/>
+    </para>
+
+    <para condition="html" role="usernotes">User Notes:
+    <ulink url="&blfs-wiki;/docbook5-xml"/></para>
+
+  </sect2>
+
+  <sect2 role="installation">
+    <title>Installation of DocBook XML DTD and Schemas 5.0</title>
+
+    <para>
+      Install <application>DocBook XML DTD and Schemas</application>
+      by running the following commands as the
+      <systemitem class="username">root</systemitem> user:
+    </para>
+
+<screen role="root"><userinput>install -vdm755 /usr/share/xml/docbook/schema/{dtd,rng,sch,xsd}/5.0 &amp;&amp;
+install -vm644  dtd/* /usr/share/xml/docbook/schema/dtd/5.0         &amp;&amp;
+install -vm644  rng/* /usr/share/xml/docbook/schema/rng/5.0         &amp;&amp;
+install -vm644  sch/* /usr/share/xml/docbook/schema/sch/5.0         &amp;&amp;
+install -vm644  xsd/* /usr/share/xml/docbook/schema/xsd/5.0</userinput></screen>
+
+    <para>
+      Create (or update) and populate the
+      <filename>/etc/xml/docbook-5.0</filename> catalog file by running the 
+      following commands as the <systemitem class="username">root</systemitem>
+      user:
+    </para>
+
+<screen role="root"><?dbfo keep-together="auto"?><userinput>if [ ! -e /etc/xml/docbook-5.0 ]; then
+    xmlcatalog --noout --create /etc/xml/docbook-5.0
+fi &amp;&amp;
+
+xmlcatalog --noout --add "public" \
+  "-//OASIS//DTD DocBook XML 5.0//EN" \
+  "file:///usr/share/xml/docbook/schema/dtd/5.0/docbook.dtd" \
+  /etc/xml/docbook-5.0 &amp;&amp;
+xmlcatalog --noout --add "system" \
+  "http://www.oasis-open.org/docbook/xml/5.0/dtd/docbook.dtd" \
+  "file:///usr/share/xml/docbook/schema/dtd/5.0/docbook.dtd" \
+  /etc/xml/docbook-5.0 &amp;&amp;
+xmlcatalog --noout --add "system" \
+  "http://docbook.org/xml/5.0/dtd/docbook.dtd" \
+  "file:///usr/share/xml/docbook/schema/dtd/5.0/docbook.dtd" \
+  /etc/xml/docbook-5.0 &amp;&amp;
+
+xmlcatalog --noout --add "uri" \
+  "http://www.oasis-open.org/docbook/xml/5.0/rng/docbook.rng" \
+  "file:///usr/share/xml/docbook/schema/rng/5.0/docbook.rng" \
+  /etc/xml/docbook-5.0 &amp;&amp;
+xmlcatalog --noout --add "uri" \
+  "http://docbook.org/xml/5.0/rng/docbook.rng" \
+  "file:///usr/share/xml/docbook/schema/rng/5.0/docbook.rng" \
+  /etc/xml/docbook-5.0 &amp;&amp;
+xmlcatalog --noout --add "uri" \
+  "http://www.oasis-open.org/docbook/xml/5.0/rng/docbookxi.rng" \
+  "file:///usr/share/xml/docbook/schema/rng/5.0/docbookxi.rng" \
+  /etc/xml/docbook-5.0 &amp;&amp;
+xmlcatalog --noout --add "uri" \
+  "http://docbook.org/xml/5.0/rng/docbookxi.rng" \
+  "file:///usr/share/xml/docbook/schema/rng/5.0/docbookxi.rng" \
+  /etc/xml/docbook-5.0 &amp;&amp;
+xmlcatalog --noout --add "uri" \
+  "http://www.oasis-open.org/docbook/xml/5.0/rnc/docbook.rnc" \
+  "file:///usr/share/xml/docbook/schema/rng/5.0/docbook.rnc" \
+  /etc/xml/docbook-5.0 &amp;&amp;
+xmlcatalog --noout --add "uri" \
+  "http://docbook.org/xml/5.0/rng/docbook.rnc" \
+  "file:///usr/share/xml/docbook/schema/rng/5.0/docbook.rnc" \
+  /etc/xml/docbook-5.0 &amp;&amp;
+xmlcatalog --noout --add "uri" \
+  "http://www.oasis-open.org/docbook/xml/5.0/rnc/docbookxi.rnc" \
+  "file:///usr/share/xml/docbook/schema/rng/5.0/docbookxi.rnc" \
+  /etc/xml/docbook-5.0 &amp;&amp;
+xmlcatalog --noout --add "uri" \
+  "http://docbook.org/xml/5.0/rng/docbookxi.rnc" \
+  "file:///usr/share/xml/docbook/schema/rng/5.0/docbookxi.rnc" \
+  /etc/xml/docbook-5.0 &amp;&amp;
+
+xmlcatalog --noout --add "uri" \
+  "http://www.oasis-open.org/docbook/xml/5.0/xsd/docbook.xsd" \
+  "file:///usr/share/xml/docbook/schema/xsd/5.0/docbook.xsd" \
+  /etc/xml/docbook-5.0 &amp;&amp;
+xmlcatalog --noout --add "uri" \
+  "http://docbook.org/xml/5.0/xsd/docbook.xsd" \
+  "file:///usr/share/xml/docbook/schema/xsd/5.0/docbook.xsd" \
+  /etc/xml/docbook-5.0 &amp;&amp;
+xmlcatalog --noout --add "uri" \
+  "http://www.oasis-open.org/docbook/xml/5.0/xsd/docbookxi.xsd" \
+  "file:///usr/share/xml/docbook/schema/xsd/5.0/docbookxi.xsd" \
+  /etc/xml/docbook-5.0 &amp;&amp;
+xmlcatalog --noout --add "uri" \
+  "http://docbook.org/xml/5.0/xsd/docbookxi.xsd" \
+  "file:///usr/share/xml/docbook/schema/xsd/5.0/docbookxi.xsd" \
+  /etc/xml/docbook-5.0 &amp;&amp;
+xmlcatalog --noout --add "uri" \
+  "http://www.oasis-open.org/docbook/xml/5.0/xsd/xi.xsd" \
+  "file:///usr/share/xml/docbook/schema/xsd/5.0/xi.xsd" \
+  /etc/xml/docbook-5.0 &amp;&amp;
+xmlcatalog --noout --add "uri" \
+  "http://docbook.org/xml/5.0/xsd/xi.xsd" \
+  "file:///usr/share/xml/docbook/schema/xsd/5.0/xi.xsd" \
+  /etc/xml/docbook-5.0 &amp;&amp;
+xmlcatalog --noout --add "uri" \
+  "http://www.oasis-open.org/docbook/xml/5.0/xsd/xlink.xsd" \
+  "file:///usr/share/xml/docbook/schema/xsd/5.0/xlink.xsd" \
+  /etc/xml/docbook-5.0 &amp;&amp;
+xmlcatalog --noout --add "uri" \
+  "http://docbook.org/xml/5.0/xsd/xlink.xsd" \
+  "file:///usr/share/xml/docbook/schema/xsd/5.0/xlink.xsd" \
+  /etc/xml/docbook-5.0 &amp;&amp;
+xmlcatalog --noout --add "uri" \
+  "http://www.oasis-open.org/docbook/xml/5.0/xsd/xml.xsd" \
+  "file:///usr/share/xml/docbook/schema/xsd/5.0/xml.xsd" \
+  /etc/xml/docbook-5.0 &amp;&amp;
+xmlcatalog --noout --add "uri" \
+  "http://docbook.org/xml/5.0/xsd/xml.xsd" \
+  "file:///usr/share/xml/docbook/schema/xsd/5.0/xml.xsd" \
+  /etc/xml/docbook-5.0 &amp;&amp;
+
+xmlcatalog --noout --add "uri" \
+  "http://www.oasis-open.org/docbook/xml/5.0/sch/docbook.sch" \
+  "file:///usr/share/xml/docbook/schema/sch/5.0/docbook.sch" \
+  /etc/xml/docbook-5.0 &amp;&amp;
+xmlcatalog --noout --add "uri" \
+  "http://docbook.org/xml/5.0/sch/docbook.sch" \
+  "file:///usr/share/xml/docbook/schema/sch/5.0/docbook.sch" \
+  /etc/xml/docbook-5.0</userinput></screen>
+
+
+    <para>
+      While again as the <systemitem class="username">root</systemitem> user,
+      create the individual catalogs:
+    </para>
+
+<screen role="root"><userinput>xmlcatalog --noout --create /usr/share/xml/docbook/schema/dtd/5.0/catalog.xml &amp;&amp;
+
+xmlcatalog --noout --add "public" \
+  "-//OASIS//DTD DocBook XML 5.0//EN" \
+  "docbook.dtd" /usr/share/xml/docbook/schema/dtd/5.0/catalog.xml &amp;&amp;
+xmlcatalog --noout --add "system" \
+  "http://www.oasis-open.org/docbook/xml/5.0/dtd/docbook.dtd" \
+  "docbook.dtd" /usr/share/xml/docbook/schema/dtd/5.0/catalog.xml &amp;&amp;
+
+xmlcatalog --noout --create /usr/share/xml/docbook/schema/rng/5.0/catalog.xml &amp;&amp;
+xmlcatalog --noout --add "uri" \
+  "http://docbook.org/xml/5.0/rng/docbook.rng" \
+  "docbook.rng" /usr/share/xml/docbook/schema/rng/5.0/catalog.xml &amp;&amp;
+xmlcatalog --noout --add "uri" \
+  "http://www.oasis-open.org/docbook/xml/5.0/rng/docbook.rng" \
+  "docbook.rng" /usr/share/xml/docbook/schema/rng/5.0/catalog.xml &amp;&amp;
+xmlcatalog --noout --add "uri" \
+  "http://docbook.org/xml/5.0/rng/docbookxi.rng" \
+  "docbookxi.rng" /usr/share/xml/docbook/schema/rng/5.0/catalog.xml &amp;&amp;
+xmlcatalog --noout --add "uri" \
+  "http://www.oasis-open.org/docbook/xml/5.0/rng/docbookxi.rng" \
+  "docbookxi.rng" /usr/share/xml/docbook/schema/rng/5.0/catalog.xml &amp;&amp;
+xmlcatalog --noout --add "uri" \
+  "http://docbook.org/xml/5.0/rng/docbook.rnc" \
+  "docbook.rnc" /usr/share/xml/docbook/schema/rng/5.0/catalog.xml &amp;&amp;
+xmlcatalog --noout --add "uri" \
+  "http://www.oasis-open.org/docbook/xml/5.0/rng/docbook.rnc" \
+  "docbook.rnc" /usr/share/xml/docbook/schema/rng/5.0/catalog.xml &amp;&amp;
+xmlcatalog --noout --add "uri" \
+  "http://docbook.org/xml/5.0/rng/docbookxi.rnc" \
+  "docbookxi.rnc" /usr/share/xml/docbook/schema/rng/5.0/catalog.xml &amp;&amp;
+xmlcatalog --noout --add "uri" \
+  "http://www.oasis-open.org/docbook/xml/5.0/rng/docbookxi.rnc" \
+  "docbookxi.rnc" /usr/share/xml/docbook/schema/rng/5.0/catalog.xml &amp;&amp;
+
+xmlcatalog --noout --create /usr/share/xml/docbook/schema/sch/5.0/catalog.xml &amp;&amp;
+xmlcatalog --noout --add "uri" \
+  "http://docbook.org/xml/5.0/sch/docbook.sch" \
+  "docbook.sch" /usr/share/xml/docbook/schema/sch/5.0/catalog.xml &amp;&amp;
+xmlcatalog --noout --add "uri" \
+  "http://www.oasis-open.org/docbook/xml/5.0/sch/docbook.sch" \
+  "docbook.sch" /usr/share/xml/docbook/schema/sch/5.0/catalog.xml &amp;&amp;
+
+xmlcatalog --noout --create /usr/share/xml/docbook/schema/xsd/5.0/catalog.xml &amp;&amp;
+xmlcatalog --noout --add "uri" \
+  "http://docbook.org/xml/5.0/xsd/docbook.xsd" \
+  "docbook.xsd" /usr/share/xml/docbook/schema/xsd/5.0/catalog.xml &amp;&amp;
+xmlcatalog --noout --add "uri" \
+  "http://www.oasis-open.org/docbook/xml/5.0/xsd/docbook.xsd" \
+  "docbook.xsd" /usr/share/xml/docbook/schema/xsd/5.0/catalog.xml &amp;&amp;
+xmlcatalog --noout --add "uri" \
+  "http://docbook.org/xml/5.0/xsd/docbookxi.xsd" \
+  "docbookxi.xsd" /usr/share/xml/docbook/schema/xsd/5.0/catalog.xml &amp;&amp;
+xmlcatalog --noout --add "uri" \
+  "http://www.oasis-open.org/docbook/xml/5.0/xsd/docbookxi.xsd" \
+  "docbookxi.xsd" /usr/share/xml/docbook/schema/xsd/5.0/catalog.xml &amp;&amp;
+xmlcatalog --noout --add "uri" \
+  "http://docbook.org/xml/5.0/xsd/xlink.xsd" \
+  "xlink.xsd" /usr/share/xml/docbook/schema/xsd/5.0/catalog.xml &amp;&amp;
+xmlcatalog --noout --add "uri" \
+   "http://www.oasis-open.org/docbook/xml/5.0/xsd/xlink.xsd" \
+   "xlink.xsd" /usr/share/xml/docbook/schema/xsd/5.0/catalog.xml &amp;&amp;
+xmlcatalog --noout --add "uri" \
+   "http://docbook.org/xml/5.0/xsd/xml.xsd" \
+   "xml.xsd" /usr/share/xml/docbook/schema/xsd/5.0/catalog.xml &amp;&amp;
+xmlcatalog --noout --add "uri" \
+   "http://www.oasis-open.org/docbook/xml/5.0/xsd/xml.xsd" \
+   "xml.xsd" /usr/share/xml/docbook/schema/xsd/5.0/catalog.xml</userinput></screen>
+
+    <para>
+      Create (or update) and populate the system XML catalog
+      (<filename>/etc/xml/catalog</filename>) by running the
+      following commands as the <systemitem class="username">root</systemitem>
+      user:
+    </para>
+
+<screen role="root"><userinput>if [ ! -e /etc/xml/catalog ]; then
+    xmlcatalog --noout --create /etc/xml/catalog
+fi &amp;&amp;
+xmlcatalog --noout --add "delegatePublic" \
+  "-//OASIS//DTD DocBook XML 5.0//EN" \
+  "file:///usr/share/xml/docbook/schema/dtd/5.0/catalog.xml" \
+  /etc/xml/catalog &amp;&amp;
+xmlcatalog --noout --add "delegateSystem" \
+  "http://docbook.org/xml/5.0/dtd/" \
+  "file:///usr/share/xml/docbook/schema/dtd/5.0/catalog.xml" \
+  /etc/xml/catalog &amp;&amp;
+xmlcatalog --noout --add "delegateURI" \
+  "http://docbook.org/xml/5.0/dtd/" \
+  "file:///usr/share/xml/docbook/schema/dtd/5.0/catalog.xml" \
+  /etc/xml/catalog &amp;&amp;
+xmlcatalog --noout --add "delegateURI" \
+  "http://docbook.org/xml/5.0/rng/"  \
+  "file:///usr/share/xml/docbook/schema/rng/5.0/catalog.xml" \
+  /etc/xml/catalog &amp;&amp;
+xmlcatalog --noout --add "delegateURI" \
+  "http://docbook.org/xml/5.0/sch/"  \
+  "file:///usr/share/xml/docbook/schema/sch/5.0/catalog.xml" \
+  /etc/xml/catalog &amp;&amp;
+xmlcatalog --noout --add "delegateURI" \
+  "http://docbook.org/xml/5.0/xsd/"  \
+  "file:///usr/share/xml/docbook/schema/xsd/5.0/catalog.xml" \
+  /etc/xml/catalog</userinput></screen>
+
+  </sect2>
+
+  <sect2 role="configuration">
+    <title>Configuring DocBook XML DTD and Schemas 5.0</title>
+
+    <sect3 id="docbook5-config">
+      <title>Config Files</title>
+
+      <para><filename>/etc/xml/catalog</filename>,
+      <filename>/etc/xml/docbook-5.0</filename></para>
+
+      <indexterm zone="docbook5 docbook-config">
+        <primary sortas="e-etc-xml-docbook5">/etc/xml/docbook-5.0</primary>
+      </indexterm>
+
+      <indexterm zone="docbook5 docbook-config">
+        <primary sortas="e-etc-xml-catalog5">/etc/xml/catalog</primary>
+      </indexterm>
+
+    </sect3>
+
+  </sect2>
+
+  <sect2 role="content">
+    <title>Contents</title>
+
+    <segmentedlist>
+      <segtitle>Installed Files</segtitle>
+      <segtitle>Installed Directories</segtitle>
+
+      <seglistitem>
+        <seg>DTD, RNC, RNG, SCH and XSD files</seg>
+        <seg>/etc/xml and /usr/share/xml/docbook/schema/{dtd,rng,sch,xsd}/5.0</seg>
+      </seglistitem>
+    </segmentedlist>
+
+    <variablelist>
+      <bridgehead renderas="sect3">Short Descriptions</bridgehead>
+      <?dbfo list-presentation="list"?>
+      <?dbhtml list-presentation="table"?>
+
+      <varlistentry id="DTD5-files">
+        <term><filename>DTD files</filename></term>
+        <listitem>
+          <para>
+            contain the DocBook 5.0 document type definitions which define the
+            element types and the attribute lists that can be used in the
+            corresponding <filename>XML</filename> files.
+          </para>
+          <indexterm zone="docbook5 DTD5-files">
+            <primary sortas="g-XML-DTD-files">XML DTD Files</primary>
+          </indexterm>
+        </listitem>
+      </varlistentry>
+
+      <varlistentry id="Schema5-files">
+        <term><filename>RNC, RNG, and SCH files</filename></term>
+        <listitem>
+          <para>
+            contain the Docbook 5.0 RelaxNG, RelaxNG Compact, and Schematron
+            schema definitions.
+          </para>
+          <indexterm zone="docbook5 Schema5-files">
+            <primary sortas="g-XML-Schema-files">XML Schema files</primary>
+          </indexterm>
+        </listitem>
+      </varlistentry>
+
+      <varlistentry id="XSD5-files">
+        <term><filename>XSD files</filename></term>
+        <listitem>
+          <para>files contain DocBook-5.0 Schematron rules.</para>
+          <indexterm zone="docbook5 XSD5-files">
+            <primary sortas="g-XML-XSD5-files">XML Schematron rules</primary>
+          </indexterm>
+        </listitem>
+      </varlistentry>
+
+    </variablelist>
+
+  </sect2>
+
+</sect1>
Index: pst/xml/docbook51.xml
===================================================================
--- pst/xml/docbook51.xml	(revision f6be42d0d7af75f2b7b2b9bf212b7e61a95cffde)
+++ pst/xml/docbook51.xml	(revision f6be42d0d7af75f2b7b2b9bf212b7e61a95cffde)
@@ -0,0 +1,313 @@
+<?xml version="1.0" encoding="ISO-8859-1"?>
+<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
+   "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
+  <!ENTITY % general-entities SYSTEM "../../general.ent">
+  %general-entities;
+
+  <!ENTITY docbook51-download-http "https://docbook.org/xml/5.1/docbook-v5.1-os.zip">
+  <!ENTITY docbook51-download-ftp  " ">
+  <!ENTITY docbook51-md5sum        "d8bea8ddfc5743578a31cb18f9ae1f5a">
+  <!ENTITY docbook51-size          "752 KB">
+  <!ENTITY docbook51-buildsize     "8.5 MB">
+  <!ENTITY docbook51-time          "less than 0.1 SBU">
+]>
+
+<sect1 id="docbook51" xreflabel="docbook-xml-5.1">
+  <?dbhtml filename="docbook51.html"?>
+
+  <sect1info>
+    <othername>$LastChangedBy$</othername>
+    <date>$Date$</date>
+  </sect1info>
+
+  <title>docbook-xml-5.1</title>
+
+  <indexterm zone="docbook51">
+    <primary sortas="a-DocBook51-XML-DTD">DocBook XML Schemas 5.1</primary>
+  </indexterm>
+
+  <sect2 role="package">
+    <title>Introduction to DocBook XML Schemas 5.1</title>
+
+    <para>
+      The <application>DocBook XML Schecmas</application>-5.1 package
+      contains schema files and Schematron rules for verification of XML data
+      files against the DocBook rule set. These are useful for structuring books
+      and software documentation to a standard allowing you to utilize
+      transformations already written for that standard.
+    </para>
+
+    &lfs90_checked;
+
+    <bridgehead renderas="sect3">Package Information</bridgehead>
+    <itemizedlist spacing="compact">
+      <listitem>
+        <para>Download (HTTP): <ulink url="&docbook51-download-http;"/></para>
+      </listitem>
+      <listitem>
+        <para>Download (FTP): <ulink url="&docbook51-download-ftp;"/></para>
+      </listitem>
+      <listitem>
+        <para>Download MD5 sum: &docbook51-md5sum;</para>
+      </listitem>
+      <listitem>
+        <para>Download size: &docbook51-size;</para>
+      </listitem>
+      <listitem>
+        <para>Estimated disk space required: &docbook51-buildsize;</para>
+      </listitem>
+      <listitem>
+        <para>Estimated build time: &docbook51-time;</para>
+      </listitem>
+    </itemizedlist>
+
+    <bridgehead renderas="sect3">DocBook XML Schemas 5.1 Dependencies</bridgehead>
+
+    <bridgehead renderas="sect4">Required</bridgehead>
+    <para role="required">
+      <xref linkend="libxml2"/>,
+      <xref linkend="sgml-common"/>, and
+      <xref linkend="unzip"/>
+    </para>
+
+    <para condition="html" role="usernotes">User Notes:
+    <ulink url="&blfs-wiki;/docbook51-xml"/></para>
+
+  </sect2>
+
+  <sect2 role="installation">
+    <title>Installation of DocBook XML Schemas 5.1</title>
+
+    <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
+    href="../../xincludes/use-unzip.xml"/>
+
+    <para>
+      Install <application>DocBook XML Schemas</application>
+      by running the following commands as the
+      <systemitem class="username">root</systemitem> user:
+    </para>
+
+<screen role="root"><userinput>install -vdm755 /usr/share/xml/docbook/schema/{rng,sch}/5.1         &amp;&amp;
+install -m644   schemas/rng/* /usr/share/xml/docbook/schema/rng/5.1 &amp;&amp;
+install -m644   schemas/sch/* /usr/share/xml/docbook/schema/sch/5.1 &amp;&amp;
+install -m755   tools/db4-entities.pl /usr/bin                      &amp;&amp;
+install -vdm755 /usr/share/xml/docbook/stylesheet/docbook5          &amp;&amp;
+install -m644   tools/db4-upgrade.xsl \
+                /usr/share/xml/docbook/stylesheet/docbook5</userinput></screen>
+
+    <para>
+      Create (or update) and populate the
+      <filename>/etc/xml/docbook-5.1</filename> catalog file by running the 
+      following commands as the <systemitem class="username">root</systemitem>
+      user:
+    </para>
+
+<screen role="root"><?dbfo keep-together="auto"?><userinput>if [ ! -e /etc/xml/docbook-5.1 ]; then
+  xmlcatalog --noout --create /etc/xml/docbook-5.1
+fi &amp;&amp;
+
+xmlcatalog --noout --add "uri" \
+  "http://www.oasis-open.org/docbook/xml/5.1/rng/docbook.rng" \
+  "file:///usr/share/xml/docbook/schema/rng/5.1/docbook.rng" \
+  /etc/xml/docbook-5.1 &amp;&amp;
+xmlcatalog --noout --add "uri" \
+  "http://docbook.org/xml/5.1/rng/docbook.rng" \
+  "file:///usr/share/xml/docbook/schema/rng/5.1/docbook.rng" \
+  /etc/xml/docbook-5.1 &amp;&amp;
+xmlcatalog --noout --add "uri" \
+  "http://www.oasis-open.org/docbook/xml/5.1/rng/docbookxi.rng" \
+  "file:///usr/share/xml/docbook/schema/rng/5.1/docbookxi.rng" \
+  /etc/xml/docbook-5.1 &amp;&amp;
+xmlcatalog --noout --add "uri" \
+  "http://docbook.org/xml/5.1/rng/docbookxi.rng" \
+  "file:///usr/share/xml/docbook/schema/rng/5.1/docbookxi.rng" \
+  /etc/xml/docbook-5.1 &amp;&amp;
+xmlcatalog --noout --add "uri" \
+  "http://www.oasis-open.org/docbook/xml/5.1/rnc/docbook.rnc" \
+  "file:///usr/share/xml/docbook/schema/rng/5.1/docbook.rnc" \
+  /etc/xml/docbook-5.1 &amp;&amp;
+xmlcatalog --noout --add "uri" \
+  "http://docbook.org/xml/5.1/rng/docbook.rnc" \
+  "file:///usr/share/xml/docbook/schema/rng/5.1/docbook.rnc" \
+  /etc/xml/docbook-5.1 &amp;&amp;
+xmlcatalog --noout --add "uri" \
+  "http://www.oasis-open.org/docbook/xml/5.1/rnc/docbookxi.rnc" \
+  "file:///usr/share/xml/docbook/schema/rng/5.1/docbookxi.rnc" \
+  /etc/xml/docbook-5.1 &amp;&amp;
+xmlcatalog --noout --add "uri" \
+  "http://docbook.org/xml/5.1/rng/docbookxi.rnc" \
+  "file:///usr/share/xml/docbook/schema/rng/5.1/docbookxi.rnc" \
+  /etc/xml/docbook-5.1 &amp;&amp;
+
+xmlcatalog --noout --add "uri" \
+  "http://www.oasis-open.org/docbook/xml/5.1/sch/docbook.sch" \
+  "file:///usr/share/xml/docbook/schema/sch/5.1/docbook.sch" \
+  /etc/xml/docbook-5.1 &amp;&amp;
+xmlcatalog --noout --add "uri" \
+  "http://docbook.org/xml/5.1/sch/docbook.sch" \
+  "file:///usr/share/xml/docbook/schema/sch/5.1/docbook.sch" \
+  /etc/xml/docbook-5.1</userinput></screen>
+
+
+    <para>
+      While again as the <systemitem class="username">root</systemitem> user,
+      create the individual catalogs:
+    </para>
+
+<screen role="root"><userinput>xmlcatalog --noout --create /usr/share/xml/docbook/schema/rng/5.1/catalog.xml &amp;&amp;
+
+xmlcatalog --noout --add "uri" \
+  "http://docbook.org/xml/5.1/schemas/rng/docbook.schemas/rng" \
+  "docbook.schemas/rng" /usr/share/xml/docbook/schema/rng/5.1/catalog.xml &amp;&amp;
+xmlcatalog --noout --add "uri" \
+  "http://www.oasis-open.org/docbook/xml/5.1/schemas/rng/docbook.schemas/rng" \
+  "docbook.schemas/rng" /usr/share/xml/docbook/schema/rng/5.1/catalog.xml &amp;&amp;
+xmlcatalog --noout --add "uri" \
+  "http://docbook.org/xml/5.1/schemas/rng/docbookxi.schemas/rng" \
+  "docbookxi.schemas/rng" /usr/share/xml/docbook/schema/rng/5.1/catalog.xml &amp;&amp;
+xmlcatalog --noout --add "uri" \
+  "http://www.oasis-open.org/docbook/xml/5.1/schemas/rng/docbookxi.schemas/rng" \
+  "docbookxi.schemas/rng" /usr/share/xml/docbook/schema/rng/5.1/catalog.xml &amp;&amp;
+xmlcatalog --noout --add "uri" \
+  "http://docbook.org/xml/5.1/schemas/rng/docbook.rnc" \
+  "docbook.rnc" /usr/share/xml/docbook/schema/rng/5.1/catalog.xml &amp;&amp;
+xmlcatalog --noout --add "uri" \
+  "http://www.oasis-open.org/docbook/xml/5.1/schemas/rng/docbook.rnc" \
+  "docbook.rnc" /usr/share/xml/docbook/schema/rng/5.1/catalog.xml &amp;&amp;
+xmlcatalog --noout --add "uri" \
+  "http://docbook.org/xml/5.1/schemas/rng/docbookxi.rnc" \
+  "docbookxi.rnc" /usr/share/xml/docbook/schema/rng/5.1/catalog.xml &amp;&amp;
+xmlcatalog --noout --add "uri" \
+  "http://www.oasis-open.org/docbook/xml/5.1/schemas/rng/docbookxi.rnc" \
+  "docbookxi.rnc" /usr/share/xml/docbook/schema/rng/5.1/catalog.xml
+xmlcatalog --noout --create /usr/share/xml/docbook/schema/sch/5.1/catalog.xml &amp;&amp;
+
+xmlcatalog --noout --add "uri" \
+  "http://docbook.org/xml/5.1/schemas/sch/docbook.schemas/sch" \
+  "docbook.schemas/sch" /usr/share/xml/docbook/schema/sch/5.1/catalog.xml &amp;&amp;
+xmlcatalog --noout --add "uri" \
+  "http://www.oasis-open.org/docbook/xml/5.1/schemas/sch/docbook.schemas/sch" \
+  "docbook.schemas/sch" /usr/share/xml/docbook/schema/sch/5.1/catalog.xml</userinput></screen>
+
+    <para>
+      Create (or update) and populate the system XML catalog
+      (<filename>/etc/xml/catalog</filename>) by running the
+      following commands as the <systemitem class="username">root</systemitem>
+      user:
+    </para>
+
+<screen role="root"><userinput>if [ ! -e /etc/xml/catalog ]; then
+  xmlcatalog --noout --create /etc/xml/catalog
+fi &amp;&amp;
+xmlcatalog --noout --add "delegatePublic" \
+  "-//OASIS//DTD DocBook XML 5.1//EN" \
+  "file:///usr/share/xml/docbook/schema/dtd/5.1/catalog.xml" \
+  /etc/xml/catalog &amp;&amp;
+xmlcatalog --noout --add "delegateSystem" \
+  "http://docbook.org/xml/5.1/dtd/" \
+  "file:///usr/share/xml/docbook/schema/dtd/5.1/catalog.xml" \
+  /etc/xml/catalog &amp;&amp;
+xmlcatalog --noout --add "delegateURI" \
+  "http://docbook.org/xml/5.1/dtd/" \
+  "file:///usr/share/xml/docbook/schema/dtd/5.1/catalog.xml" \
+  /etc/xml/catalog &amp;&amp;
+xmlcatalog --noout --add "delegateURI" \
+  "http://docbook.org/xml/5.1/rng/"  \
+  "file:///usr/share/xml/docbook/schema/rng/5.1/catalog.xml" \
+  /etc/xml/catalog &amp;&amp;
+xmlcatalog --noout --add "delegateURI" \
+  "http://docbook.org/xml/5.1/sch/"  \
+  "file:///usr/share/xml/docbook/schema/sch/5.1/catalog.xml" \
+  /etc/xml/catalog &amp;&amp;
+xmlcatalog --noout --add "delegateURI" \
+  "http://docbook.org/xml/5.1/xsd/"  \
+  "file:///usr/share/xml/docbook/schema/xsd/5.1/catalog.xml" \
+  /etc/xml/catalog</userinput></screen>
+
+  </sect2>
+
+  <sect2 role="configuration">
+    <title>Configuring DocBook XML Schemas 5.1</title>
+
+    <sect3 id="docbook51-config">
+      <title>Config Files</title>
+
+      <para><filename>/etc/xml/catalog</filename>,
+      <filename>/etc/xml/docbook-5.1</filename></para>
+
+      <indexterm zone="docbook51 docbook-config">
+        <primary sortas="e-etc-xml-docbook51">/etc/xml/docbook-5.1</primary>
+      </indexterm>
+
+      <indexterm zone="docbook51 docbook-config">
+        <primary sortas="e-etc-xml-catalog51">/etc/xml/catalog</primary>
+      </indexterm>
+
+    </sect3>
+
+  </sect2>
+
+  <sect2 role="content">
+    <title>Contents</title>
+
+    <segmentedlist>
+      <segtitle>Installed Programs</segtitle>
+      <segtitle>Installed Files</segtitle>
+      <segtitle>Installed Directories</segtitle>
+
+      <seglistitem>
+        <seg>db4-entities.pl</seg>
+        <seg>RNC, RNG, SCH, and XSL files</seg>
+        <seg>/etc/xml, /usr/share/xml/docbook/stylesheets, and
+        /usr/share/xml/docbook/schema/{rng,sch}/5.1</seg>
+      </seglistitem>
+    </segmentedlist>
+
+    <variablelist>
+      <bridgehead renderas="sect3">Short Descriptions</bridgehead>
+      <?dbfo list-presentation="list"?>
+      <?dbhtml list-presentation="table"?>
+
+      <varlistentry id="db4-entries-pl">
+        <term><filename>db4-entities.pl</filename></term>
+        <listitem>
+          <para>
+            is a script to convert DocBook 4.x filed to DocBook 5.1.
+          </para>
+          <indexterm zone="docbook51 db4-entries-pl">
+            <primary sortas="b-db4-entries-pl">db4-entities.pl</primary>
+          </indexterm>
+        </listitem>
+      </varlistentry>
+
+      <varlistentry id="Schema51-files">
+        <term><filename>RNC, RNG, and SCH files</filename></term>
+        <listitem>
+          <para>
+            contain the Docbook 5.1 RelaxNG, RelaxNG Compact, and Schematron
+            schema definitions.
+          </para>
+          <indexterm zone="docbook51 Schema51-files">
+            <primary sortas="g-XML-Schema-files">XML Schema files</primary>
+          </indexterm>
+        </listitem>
+      </varlistentry>
+
+      <varlistentry id="db4-upgrade-xsl">
+        <term><filename>db4-upgrade.xsl</filename></term>
+        <listitem>
+          <para>
+            is an XSL stylesheet to assist in coversion from DcoBook 4.x files
+            to DocBook 5.1.
+          </para>
+          <indexterm zone="docbook51 db4-upgrade-xsl">
+            <primary sortas="g-XSL-Stylesheets">XSL Stylesheets</primary>
+          </indexterm>
+        </listitem>
+      </varlistentry>
+
+    </variablelist>
+
+  </sect2>
+
+</sect1>
Index: pst/xml/xml.xml
===================================================================
--- pst/xml/xml.xml	(revision eccffcef8c60e63e7183e04539d89e8e0b1d23b8)
+++ pst/xml/xml.xml	(revision f6be42d0d7af75f2b7b2b9bf212b7e61a95cffde)
@@ -21,4 +21,6 @@
 
   <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" href="docbook.xml"/>
+  <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" href="docbook5.xml"/>
+  <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" href="docbook51.xml"/>
   <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" href="docbook-xsl.xml"/>
   <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" href="itstool.xml"/>
