lfs-book/stylesheets/lfs-xsl/docbook-xsl-1.78.1/params/use.id.function.xml

<refentry xmlns="http://docbook.org/ns/docbook"
          xmlns:xlink="http://www.w3.org/1999/xlink"
          xmlns:xi="http://www.w3.org/2001/XInclude"
          xmlns:src="http://nwalsh.com/xmlns/litprog/fragment"
          xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
          version="5.0" xml:id="use.id.function">
<refmeta>
<refentrytitle>use.id.function</refentrytitle>
<refmiscinfo class="other" otherclass="datatype">boolean</refmiscinfo>
</refmeta>
<refnamediv>
<refname>use.id.function</refname>
<refpurpose>Use the XPath id() function to find link targets?</refpurpose>
</refnamediv>

<refsynopsisdiv>
<src:fragment xml:id="use.id.function.frag">
<xsl:param name="use.id.function" select="1"/>
</src:fragment>
</refsynopsisdiv>

<refsection><info><title>Description</title></info>

<para>If 1, the stylesheets use the <function>id()</function> function
to find the targets of cross reference elements. This is more
efficient, but only works if your XSLT processor implements the
<function>id()</function> function, naturally.</para>
<para>THIS PARAMETER IS NOT SUPPORTED. IT IS ALWAYS ASSUMED TO BE 1.
SEE xref.xsl IF YOU NEED TO TURN IT OFF.</para>

</refsection>
</refentry>