Index: /trunk/doc/manual/xhtml-qhelp.xsl
===================================================================
--- /trunk/doc/manual/xhtml-qhelp.xsl	(revision 86632)
+++ /trunk/doc/manual/xhtml-qhelp.xsl	(revision 86633)
@@ -29,5 +29,5 @@
         <xsl:value-of select="$newline" />
         <xsl:element name="toc">
-          <xsl:apply-templates select="//xhtml:div[@class='toc']//xhtml:span[@class='chapter']"/>
+          <xsl:apply-templates select="//xhtml:div[@class='toc']//xhtml:span[@class='chapter'] | //xhtml:div[@class='toc']//xhtml:span[@class='preface']"/>
         </xsl:element><!-- toc -->
         <xsl:value-of select="$newline" />
@@ -60,5 +60,5 @@
 
   <!-- ===================toc related template(s)====================== -->
-  <xsl:template match="xhtml:span[@class='chapter']">
+  <xsl:template match="xhtml:span[@class='chapter'] | xhtml:span[@class='preface']">
     <xsl:element name="section">
       <xsl:attribute name="title">