source: stylesheets/lfs-xsl/chunk-master.xsl

<?xml version='1.0' encoding='UTF-8'?>

<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
                xmlns="http://www.w3.org/1999/xhtml"
                version="1.0">

   <!-- Top-level chunked code for normal processing.
        Import customized output templates.
        Include customized chunk templates.
        Replaces {docbook-xsl}/xhtml/chunk.xsl -->

    <!-- Our master non-chunking presentation templates -->
  <xsl:import href="chunk-slave.xsl"/>

    <!-- Upstream chunk code named templates -->
  <xsl:import href="http://docbook.sourceforge.net/release/xsl/current/xhtml/chunk-common.xsl"/>

    <!-- Upstream chunk code match templates -->
  <xsl:include href="http://docbook.sourceforge.net/release/xsl/current/xhtml/chunk-code.xsl"/>

    <!-- Including our customized chunks templates -->
  <xsl:include href="xhtml/lfs-index.xsl"/>
  <xsl:include href="xhtml/lfs-legalnotice.xsl"/>
  <xsl:include href="xhtml/lfs-navigational.xsl"/>
  <xsl:include href="xhtml/lfs-glossary.xsl"/>

    <!-- sect1:
           Prevent creation of dummy sect1 files used to emulate sub-chapters. -->
    <!-- The original template is in {docbook-xsl}/xhtml/chunk-code.xsl
         It match also others sect* tags. The code for that tags is unchanged. -->
  <xsl:template match="sect1">
    <xsl:variable name="ischunk">
      <xsl:call-template name="chunk"/>
    </xsl:variable>
    <xsl:choose>
      <xsl:when test="@role = 'dummy'"/>
      <xsl:when test="not(parent::*)">
        <xsl:call-template name="process-chunk-element"/>
      </xsl:when>
      <xsl:when test="$ischunk = 0">
        <xsl:apply-imports/>
      </xsl:when>
      <xsl:otherwise>
        <xsl:call-template name="process-chunk-element"/>
      </xsl:otherwise>
    </xsl:choose>
  </xsl:template>

</xsl:stylesheet>