diff --git a/hash/doc/Jamfile.v2 b/hash/doc/Jamfile.v2
index 84a7c26..731a228 100644
--- a/hash/doc/Jamfile.v2
+++ b/hash/doc/Jamfile.v2
@@ -8,6 +8,8 @@ boostbook standalone : hash :
     <xsl:param>admon.graphics.path=images/
     <xsl:param>navig.graphics.path=images/
     <xsl:param>html.stylesheet=boostbook.css
+    <xsl:param>boost.root=../../../../..
+    <xsl:param>boost.libraries=../../../../libraries.htm
     <xsl:param>chunk.first.sections=1
     <xsl:param>chunk.section.depth=2
     <xsl:param>generate.section.toc.level=2
diff --git a/hash/doc/ref.xml b/hash/doc/ref.xml
index 283914e..6bb32ce 100644
--- a/hash/doc/ref.xml
+++ b/hash/doc/ref.xml
@@ -406,6 +406,8 @@ file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
         </method>
       </struct-specialization>
 
+      <free-function-group name="Support functions (Boost extension)."> 
+
       <!--
         boost::hash_combine
         -->
@@ -500,6 +502,10 @@ for(; first != last; ++first)
         </para></throws>
       </overloaded-function>
 
+      </free-function-group>
+
+      <free-function-group name="Overloadable hash implementation (Boost extension).">
+
       <!--
         boost::hash_value - integers
         -->
@@ -797,6 +803,7 @@ return seed;</programlisting></entry>
           </informaltable>
         </returns>
       </overloaded-function>
+      </free-function-group>
     </namespace>
   </header>
 </library-reference>