LDP XSL stylesheet structure

ldp-html.xsl:

<?xml version='1.0'?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
                version='1.0'
                xmlns="http://www.w3.org/TR/xhtml1/transitional"
                exclude-result-prefixes="#default">

<!-- Note the the *order* of the import statements below is important and
     should not be changed. -->

<!-- Change this to the path to where you have installed the standard
     DocBook XSL stylesheets.  -->
<xsl:import href="/usr/share/sgml/docbook/docbook-xsl-1.51.1/html/docbook.xsl"/>

<!-- Imports the common LDP customization layer. -->
<xsl:import href="ldp-html-common.xsl"/>

<!-- If there was some reason to override 'ldp-html-common.xsl' or to 
     perform any other customizations that affect *only* the generation
     of a single HTML file, those templates or parameters could be
     entered here. -->

</xsl:stylesheet>

ldp-html-chunk.xsl:

<?xml version='1.0'?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
                version='1.0'
                xmlns="http://www.w3.org/TR/xhtml1/transitional"
                exclude-result-prefixes="#default">

<!-- Note the the *order* of the import statements below is important and
     should not be changed. -->

<!-- Change this to the path to where you have installed the standard
     DocBook XSL stylesheets -->
<xsl:import href="/usr/share/sgml/docbook/docbook-xsl-1.51.1/html/chunk.xsl"/>

<!-- Imports the common LDP customization layer. -->
<xsl:import href="ldp-html-common.xsl"/>

<!-- If there was some reason to override 'ldp-html-common.xsl' or to 
     perform any other customizations that affect *only* the generation
     of multiple HTML files, those templates or parameters could be
     entered here. -->

</xsl:stylesheet> 

ldp-html-common.xsl

<?xml version='1.0'?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
                version='1.0'
                xmlns="http://www.w3.org/TR/xhtml1/transitional"
                exclude-result-prefixes="#default"
		>

<!-- Note that this file does NOT import any other files -->

<xsl:param name="admon.graphics" select="0"/>

<xsl:param name="admon.graphics.path">images/</xsl:param>

<xsl:param name="funcsynopsis.decoration" select="1" doc:type="boolean"/>

<xsl:param name="html.ext" select="'.html'"/>

<!-- ... more parameters ... -->

</xsl:stylesheet>