--- /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="htmlhelp.hhc.binary">
+<refmeta>
+<refentrytitle>htmlhelp.hhc.binary</refentrytitle>
+<refmiscinfo class="other" otherclass="datatype">boolean</refmiscinfo>
+</refmeta>
+<refnamediv>
+<refname>htmlhelp.hhc.binary</refname>
+<refpurpose>Generate binary ToC?</refpurpose>
+</refnamediv>
+
+<refsynopsisdiv>
+<src:fragment xml:id="htmlhelp.hhc.binary.frag">
+<xsl:param name="htmlhelp.hhc.binary" select="1"/>
+</src:fragment>
+</refsynopsisdiv>
+
+<refsection><info><title>Description</title></info>
+
+<para>Set to non-zero to generate a binary TOC. You must create a binary TOC
+if you want to add Prev/Next buttons to toolbar (which is default
+behaviour). Files with binary TOC can't be merged.</para>
+
+</refsection>
+</refentry>