--- /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="admon.graphics.extension">
+<refmeta>
+<refentrytitle>admon.graphics.extension</refentrytitle>
+<refmiscinfo class="other" otherclass="datatype">string</refmiscinfo>
+</refmeta>
+<refnamediv>
+<refname>admon.graphics.extension</refname>
+<refpurpose>Filename extension for admonition graphics</refpurpose>
+</refnamediv>
+
+<refsynopsisdiv>
+<src:fragment xml:id="admon.graphics.extension.frag">
+<xsl:param name="admon.graphics.extension">.png</xsl:param>
+</src:fragment>
+</refsynopsisdiv>
+
+<refsection><info><title>Description</title></info>
+
+<para>Sets the filename extension to use on admonition graphics.</para>
+
+</refsection>
+</refentry>