<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="refentry.manual.fallback.profile"> <refmeta> <refentrytitle>refentry.manual.fallback.profile</refentrytitle> <refmiscinfo class="other" otherclass="datatype">string</refmiscinfo> </refmeta> <refnamediv> <refname>refentry.manual.fallback.profile</refname> <refpurpose>Specifies profile of "fallback" for refentry "manual" data</refpurpose> </refnamediv> <refsynopsisdiv> <src:fragment xml:id="refentry.manual.fallback.profile.frag"> <xsl:param name="refentry.manual.fallback.profile"> refmeta/refmiscinfo[not(@class = 'date')][1]/node()</xsl:param> </src:fragment> </refsynopsisdiv> <refsection><info><title>Description</title></info> <para>The value of <parameter>refentry.manual.fallback.profile</parameter> is a string representing an XPath expression. It is evaluated at run-time and used only if no "manual" data can be found by other means (that is, either using the <tag>refentry</tag> metadata-gathering logic "hard coded" in the stylesheets, or the value of <parameter>refentry.manual.profile</parameter>, if it is enabled).</para> <important> <para>Depending on which XSLT engine you run, either the EXSLT <function>dyn:evaluate</function> extension function (for xsltproc or Xalan) or <function>saxon:evaluate</function> extension function (for Saxon) are used to dynamically evaluate the value of <parameter>refentry.manual.fallback.profile</parameter> at run-time. If you don't use xsltproc, Saxon, Xalan -- or some other XSLT engine that supports <function>dyn:evaluate</function> -- you must manually disable fallback processing by setting an empty value for the <parameter>refentry.manual.fallback.profile</parameter> parameter.</para> </important> </refsection> </refentry>