--- /dev/null
+<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="saxon.linenumbering">
+<refmeta>
+<refentrytitle>saxon.linenumbering</refentrytitle>
+<refmiscinfo class="other" otherclass="datatype">boolean</refmiscinfo>
+</refmeta>
+<refnamediv>
+<refname>saxon.linenumbering</refname>
+<refpurpose>Enable the line numbering extension</refpurpose>
+</refnamediv>
+
+<refsynopsisdiv>
+<src:fragment xml:id="saxon.linenumbering.frag">
+<xsl:param name="saxon.linenumbering" select="1"/>
+</src:fragment>
+</refsynopsisdiv>
+
+<refsection><info><title>Description</title></info>
+
+<para>If non-zero, verbatim environments (elements that have the
+format='linespecific' notation attribute: <tag>address</tag>,
+<tag>literallayout</tag>, <tag>programlisting</tag>,
+<tag>screen</tag>, <tag>synopsis</tag>) that specify line numbering
+will have line numbers.
+</para>
+
+</refsection>
+</refentry>