lfs-book/stylesheets/lfs-xsl/docbook-xsl-1.78.1/params/current.docid.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="current.docid"> 
<refmeta> 
<refentrytitle>current.docid</refentrytitle> 
<refmiscinfo class="other" otherclass="datatype">string</refmiscinfo> 
</refmeta> 
<refnamediv> 
<refname>current.docid</refname> 
<refpurpose>targetdoc identifier for the document being
processed</refpurpose> 
</refnamediv> 
<refsynopsisdiv> <src:fragment xml:id="current.docid.frag">
<xsl:param name="current.docid"/>
</src:fragment> 
</refsynopsisdiv> 
<refsection><info><title>Description</title></info> 
 
<para>When olinks between documents are resolved for HTML output, the stylesheet can compute the relative path between the current document and the target document. The stylesheet needs to know the <literal>targetdoc</literal> identifiers for both documents, as they appear in the <parameter>target.database.document</parameter> database file. This parameter passes to the stylesheet
the targetdoc identifier of the current document, since that
identifier does not appear in the document itself. </para>
<para>This parameter can also be used for print output. If an olink's  <literal>targetdoc</literal>  id differs from the <literal>current.docid</literal>, then the stylesheet can append the target document's title to the generated olink text. That identifies to the reader that the link is to a different document, not the current document. See also <parameter>olink.doctitle</parameter> to enable that feature.</para> 
</refsection> 
</refentry>