+<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="nominal.image.depth">
+<refmeta>
+<refentrytitle>nominal.image.depth</refentrytitle>
+<refmiscinfo class="other" otherclass="datatype">length</refmiscinfo>
+</refmeta>
+<refnamediv>
+<refname>nominal.image.depth</refname>
+<refpurpose>Nominal image depth</refpurpose>
+</refnamediv>
+
+<refsynopsisdiv>
+<src:fragment xml:id="nominal.image.depth.frag">
+<xsl:param name="nominal.image.depth" select="4 * $pixels.per.inch"/>
+</src:fragment>
+</refsynopsisdiv>
+
+<refsection><info><title>Description</title></info>
+
+<para>See <parameter>nominal.image.width</parameter>.</para>
+
+</refsection>
+</refentry>