--- /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="root.filename">
+<refmeta>
+<refentrytitle>root.filename</refentrytitle>
+<refmiscinfo class="other" otherclass="datatype">uri</refmiscinfo>
+</refmeta>
+<refnamediv>
+<refname>root.filename</refname>
+<refpurpose>Identifies the name of the root HTML file when chunking</refpurpose>
+</refnamediv>
+
+<refsynopsisdiv>
+<src:fragment xml:id="root.filename.frag">
+<xsl:param name="root.filename">index</xsl:param>
+</src:fragment>
+</refsynopsisdiv>
+
+<refsection><info><title>Description</title></info>
+
+<para>The <parameter>root.filename</parameter> is the base filename for
+the chunk created for the root of each document processed.
+</para>
+
+</refsection>
+</refentry>