diff --git a/libs/functional/hash/doc/ref.xml b/libs/functional/hash/doc/ref.xml
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+
+<!--
+Copyright Daniel James 2005-2009
+Distributed under the Boost Software License, Version 1.0. (See accompanying
+file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+-->
+
+<library-reference>
+  <section id="hash.reference.specification">
+    <para>For the full specification, see section 6.3 of the
+        <ulink url="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2005/n1836.pdf">C++ Standard Library Technical Report</ulink>
+        and issue 6.18 of the
+        <ulink url="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2005/n1837.pdf">Library Extension Technical Report Issues List</ulink> (page 63).
+    </para>
+  </section>
+  <header name="boost/functional/hash.hpp">
+    <para>
+      Defines <code><classname>boost::hash</classname></code>,
+      and helper functions.
+    </para>
+
+    <namespace name="boost">
+
+      <!--
+        boost::hash
+        -->
+
+      <struct name="hash">
+        <template>
+          <template-type-parameter name="T"/>
+        </template>
+
+        <inherit access="public">
+          <classname>std::unary_function&lt;T, std::size_t&gt;</classname>
+        </inherit>
+
+        <purpose><simpara>A <ulink url="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2005/n1836.pdf">TR1</ulink> compliant hash function object.</simpara></purpose>
+
+        <method name="operator()" cv="const">
+          <type>std::size_t</type>
+          <parameter name="val">
+            <paramtype>T const&amp;</paramtype>
+          </parameter>
+          <returns><para>
+            <programlisting><functionname>hash_value</functionname>(val)</programlisting>
+          </para></returns>
+          <notes>
+            <para>
+              The call to <code><functionname>hash_value</functionname></code>
+              is unqualified, so that custom overloads can be
+              found via argument dependent lookup.
+            </para>
+            <para>
+              This is not defined when the macro <code>BOOST_HASH_NO_EXTENSIONS</code>
+              is defined. The specializations are still defined, so only the specializations
+              required by TR1 are defined.
+            </para>
+            <para>
+              Forward declared in
+              <code>&lt;boost/functional/hash_fwd.hpp&gt;</code>
+            </para>
+          </notes>
+          <throws><para>
+            Only throws if
+            <code><functionname>hash_value</functionname>(T)</code> throws.
+          </para></throws>
+        </method>
+      </struct>
+
+      <struct-specialization name="hash">
+        <template></template>
+        <specialization>
+          <template-arg>bool</template-arg>
+        </specialization>
+        <method name="operator()" cv="const">
+          <type>std::size_t</type>
+          <parameter name="val">
+            <paramtype>bool</paramtype>
+          </parameter>
+          <returns>
+            <para>Unspecified in TR1, except that equal arguments yield the same result.</para>
+            <para><functionname>hash_value</functionname>(val) in Boost.</para>
+          </returns>
+          <throws><para>Doesn't throw</para></throws>
+        </method>
+      </struct-specialization>
+
+      <struct-specialization name="hash">
+        <template></template>
+        <specialization>
+          <template-arg>char</template-arg>
+        </specialization>
+        <method name="operator()" cv="const">
+          <type>std::size_t</type>
+          <parameter name="val">
+            <paramtype>char</paramtype>
+          </parameter>
+          <returns>
+            <para>Unspecified in TR1, except that equal arguments yield the same result.</para>
+            <para><functionname>hash_value</functionname>(val) in Boost.</para>
+          </returns>
+          <throws><para>Doesn't throw</para></throws>
+        </method>
+      </struct-specialization>
+
+      <struct-specialization name="hash">
+        <template></template>
+        <specialization>
+          <template-arg>signed char</template-arg>
+        </specialization>
+        <method name="operator()" cv="const">
+          <type>std::size_t</type>
+          <parameter name="val">
+            <paramtype>signed char</paramtype>
+          </parameter>
+          <returns>
+            <para>Unspecified in TR1, except that equal arguments yield the same result.</para>
+            <para><functionname>hash_value</functionname>(val) in Boost.</para>
+          </returns>
+          <throws><para>Doesn't throw</para></throws>
+        </method>
+      </struct-specialization>
+
+      <struct-specialization name="hash">
+        <template></template>
+        <specialization>
+          <template-arg>unsigned char</template-arg>
+        </specialization>
+        <method name="operator()" cv="const">
+          <type>std::size_t</type>
+          <parameter name="val">
+            <paramtype>unsigned char</paramtype>
+          </parameter>
+          <returns>
+            <para>Unspecified in TR1, except that equal arguments yield the same result.</para>
+            <para><functionname>hash_value</functionname>(val) in Boost.</para>
+          </returns>
+          <throws><para>Doesn't throw</para></throws>
+        </method>
+      </struct-specialization>
+
+      <struct-specialization name="hash">
+        <template></template>
+        <specialization>
+          <template-arg>wchar_t</template-arg>
+        </specialization>
+        <method name="operator()" cv="const">
+          <type>std::size_t</type>
+          <parameter name="val">
+            <paramtype>wchar_t</paramtype>
+          </parameter>
+          <returns>
+            <para>Unspecified in TR1, except that equal arguments yield the same result.</para>
+            <para><functionname>hash_value</functionname>(val) in Boost.</para>
+          </returns>
+          <throws><para>Doesn't throw</para></throws>
+        </method>
+      </struct-specialization>
+
+      <struct-specialization name="hash">
+        <template></template>
+        <specialization>
+          <template-arg>short</template-arg>
+        </specialization>
+        <method name="operator()" cv="const">
+          <type>std::size_t</type>
+          <parameter name="val">
+            <paramtype>short</paramtype>
+          </parameter>
+          <returns>
+            <para>Unspecified in TR1, except that equal arguments yield the same result.</para>
+            <para><functionname>hash_value</functionname>(val) in Boost.</para>
+          </returns>
+          <throws><para>Doesn't throw</para></throws>
+        </method>
+      </struct-specialization>
+
+      <struct-specialization name="hash">
+        <template></template>
+        <specialization>
+          <template-arg>unsigned short</template-arg>
+        </specialization>
+        <method name="operator()" cv="const">
+          <type>std::size_t</type>
+          <parameter name="val">
+            <paramtype>unsigned short</paramtype>
+          </parameter>
+          <returns>
+            <para>Unspecified in TR1, except that equal arguments yield the same result.</para>
+            <para><functionname>hash_value</functionname>(val) in Boost.</para>
+          </returns>
+          <throws><para>Doesn't throw</para></throws>
+        </method>
+      </struct-specialization>
+
+      <struct-specialization name="hash">
+        <template></template>
+        <specialization>
+          <template-arg>int</template-arg>
+        </specialization>
+        <method name="operator()" cv="const">
+          <type>std::size_t</type>
+          <parameter name="val">
+            <paramtype>int</paramtype>
+          </parameter>
+          <returns>
+            <para>Unspecified in TR1, except that equal arguments yield the same result.</para>
+            <para><functionname>hash_value</functionname>(val) in Boost.</para>
+          </returns>
+          <throws><para>Doesn't throw</para></throws>
+        </method>
+      </struct-specialization>
+
+      <struct-specialization name="hash">
+        <template></template>
+        <specialization>
+          <template-arg>unsigned int</template-arg>
+        </specialization>
+        <method name="operator()" cv="const">
+          <type>std::size_t</type>
+          <parameter name="val">
+            <paramtype>unsigned int</paramtype>
+          </parameter>
+          <returns>
+            <para>Unspecified in TR1, except that equal arguments yield the same result.</para>
+            <para><functionname>hash_value</functionname>(val) in Boost.</para>
+          </returns>
+          <throws><para>Doesn't throw</para></throws>
+        </method>
+      </struct-specialization>
+
+      <struct-specialization name="hash">
+        <template></template>
+        <specialization>
+          <template-arg>long</template-arg>
+        </specialization>
+        <method name="operator()" cv="const">
+          <type>std::size_t</type>
+          <parameter name="val">
+            <paramtype>long</paramtype>
+          </parameter>
+          <returns>
+            <para>Unspecified in TR1, except that equal arguments yield the same result.</para>
+            <para><functionname>hash_value</functionname>(val) in Boost.</para>
+          </returns>
+          <throws><para>Doesn't throw</para></throws>
+        </method>
+      </struct-specialization>
+
+      <struct-specialization name="hash">
+        <template></template>
+        <specialization>
+          <template-arg>unsigned long</template-arg>
+        </specialization>
+        <method name="operator()" cv="const">
+          <type>std::size_t</type>
+          <parameter name="val">
+            <paramtype>unsigned long</paramtype>
+          </parameter>
+          <returns>
+            <para>Unspecified in TR1, except that equal arguments yield the same result.</para>
+            <para><functionname>hash_value</functionname>(val) in Boost.</para>
+          </returns>
+          <throws><para>Doesn't throw</para></throws>
+        </method>
+      </struct-specialization>
+
+      <struct-specialization name="hash">
+        <template></template>
+        <specialization>
+          <template-arg>long long</template-arg>
+        </specialization>
+        <method name="operator()" cv="const">
+          <type>std::size_t</type>
+          <parameter name="val">
+            <paramtype>long long</paramtype>
+          </parameter>
+          <returns>
+            <para>Unspecified in TR1, except that equal arguments yield the same result.</para>
+            <para><functionname>hash_value</functionname>(val) in Boost.</para>
+          </returns>
+          <throws><para>Doesn't throw</para></throws>
+        </method>
+      </struct-specialization>
+
+      <struct-specialization name="hash">
+        <template></template>
+        <specialization>
+          <template-arg>unsigned long long</template-arg>
+        </specialization>
+        <method name="operator()" cv="const">
+          <type>std::size_t</type>
+          <parameter name="val">
+            <paramtype>unsigned long long</paramtype>
+          </parameter>
+          <returns>
+            <para>Unspecified in TR1, except that equal arguments yield the same result.</para>
+            <para><functionname>hash_value</functionname>(val) in Boost.</para>
+          </returns>
+          <throws><para>Doesn't throw</para></throws>
+        </method>
+      </struct-specialization>
+
+      <struct-specialization name="hash">
+        <template></template>
+        <specialization>
+          <template-arg>float</template-arg>
+        </specialization>
+        <method name="operator()" cv="const">
+          <type>std::size_t</type>
+          <parameter name="val">
+            <paramtype>float</paramtype>
+          </parameter>
+          <returns>
+            <para>Unspecified in TR1, except that equal arguments yield the same result.</para>
+            <para><functionname>hash_value</functionname>(val) in Boost.</para>
+          </returns>
+          <throws><para>Doesn't throw</para></throws>
+        </method>
+      </struct-specialization>
+
+      <struct-specialization name="hash">
+        <template></template>
+        <specialization>
+          <template-arg>double</template-arg>
+        </specialization>
+        <method name="operator()" cv="const">
+          <type>std::size_t</type>
+          <parameter name="val">
+            <paramtype>double</paramtype>
+          </parameter>
+          <returns>
+            <para>Unspecified in TR1, except that equal arguments yield the same result.</para>
+            <para><functionname>hash_value</functionname>(val) in Boost.</para>
+          </returns>
+          <throws><para>Doesn't throw</para></throws>
+        </method>
+      </struct-specialization>
+
+      <struct-specialization name="hash">
+        <template></template>
+        <specialization>
+          <template-arg>long double</template-arg>
+        </specialization>
+        <method name="operator()" cv="const">
+          <type>std::size_t</type>
+          <parameter name="val">
+            <paramtype>long double</paramtype>
+          </parameter>
+          <returns>
+            <para>Unspecified in TR1, except that equal arguments yield the same result.</para>
+            <para><functionname>hash_value</functionname>(val) in Boost.</para>
+          </returns>
+          <throws><para>Doesn't throw</para></throws>
+        </method>
+      </struct-specialization>
+
+      <struct-specialization name="hash">
+        <template></template>
+        <specialization>
+          <template-arg>std::string</template-arg>
+        </specialization>
+        <method name="operator()" cv="const">
+          <type>std::size_t</type>
+          <parameter name="val">
+            <paramtype>std::string const&amp;</paramtype>
+          </parameter>
+          <returns>
+            <para>Unspecified in TR1, except that equal arguments yield the same result.</para>
+            <para><functionname>hash_value</functionname>(val) in Boost.</para>
+          </returns>
+          <throws><para>Doesn't throw</para></throws>
+        </method>
+      </struct-specialization>
+
+      <struct-specialization name="hash">
+        <template></template>
+        <specialization>
+          <template-arg>std::wstring</template-arg>
+        </specialization>
+        <method name="operator()" cv="const">
+          <type>std::size_t</type>
+          <parameter name="val">
+            <paramtype>std::wstring const&amp;</paramtype>
+          </parameter>
+          <returns>
+            <para>Unspecified in TR1, except that equal arguments yield the same result.</para>
+            <para><functionname>hash_value</functionname>(val) in Boost.</para>
+          </returns>
+          <throws><para>Doesn't throw</para></throws>
+        </method>
+      </struct-specialization>
+
+      <struct-specialization name="hash">
+        <template>
+          <template-type-parameter name="T"/>
+        </template>
+        <specialization>
+          <template-arg>T*</template-arg>
+        </specialization>
+        <method name="operator()" cv="const">
+          <type>std::size_t</type>
+          <parameter name="val">
+            <paramtype>T*</paramtype>
+          </parameter>
+          <returns>
+            <para>Unspecified in TR1, except that equal arguments yield the same result.</para>
+          </returns>
+          <throws><para>Doesn't throw</para></throws>
+        </method>
+      </struct-specialization>
+
+      <struct-specialization name="hash">
+        <template></template>
+        <specialization>
+          <template-arg>std::type_index</template-arg>
+        </specialization>
+        <method name="operator()" cv="const">
+          <type>std::size_t</type>
+          <parameter name="val">
+            <paramtype>std::type_index</paramtype>
+          </parameter>
+          <returns>
+            <para><code>val.hash_code()</code></para>
+          </returns>
+          <throws><para>Doesn't throw</para></throws>
+        </method>
+        <notes>
+          <para>
+            Only available if it's in your standard library and Boost.Config
+            is aware of it.
+          </para>
+        </notes>
+      </struct-specialization>
+
+      <free-function-group name="Support functions (Boost extension)."> 
+
+      <!--
+        boost::hash_combine
+        -->
+
+      <function name="hash_combine">
+        <template>
+          <template-type-parameter name="T"/>
+        </template>
+        <type>void</type>
+        <parameter name="seed"><paramtype>size_t &amp;</paramtype></parameter>
+        <parameter name="v"><paramtype>T const&amp;</paramtype></parameter>
+        <purpose><simpara>
+            Called repeatedly to incrementally create a hash value from
+            several variables.
+        </simpara></purpose>
+        <effects><programlisting>seed ^= <functionname>hash_value</functionname>(v) + 0x9e3779b9 + (seed &lt;&lt; 6) + (seed &gt;&gt; 2);</programlisting></effects>
+        <notes>
+          <para><functionname>hash_value</functionname> is called without
+          qualification, so that overloads can be found via ADL.</para>
+          <para>This is an extension to TR1</para>
+          <para>
+            Forward declared in
+            <code>&lt;boost/functional/hash_fwd.hpp&gt;</code>
+          </para>
+        </notes>
+        <throws>
+          Only throws if <functionname>hash_value</functionname>(T) throws.
+          Strong exception safety, as long as <functionname>hash_value</functionname>(T)
+          also has strong exception safety.
+        </throws>
+      </function>
+
+      <!--
+        boost::hash_range
+        -->
+
+      <overloaded-function name="hash_range">
+        <signature>
+          <template>
+            <template-type-parameter name="It"/>
+          </template>
+          <type>std::size_t</type>
+          <parameter name="first"><paramtype>It</paramtype></parameter>
+          <parameter name="last"><paramtype>It</paramtype></parameter>
+        </signature>
+
+        <signature>
+          <template>
+            <template-type-parameter name="It"/>
+          </template>
+          <type>void</type>
+          <parameter name="seed"><paramtype>std::size_t&amp;</paramtype></parameter>
+          <parameter name="first"><paramtype>It</paramtype></parameter>
+          <parameter name="last"><paramtype>It</paramtype></parameter>
+        </signature>
+
+        <purpose><simpara>
+            Calculate the combined hash value of the elements of an iterator
+            range.
+        </simpara></purpose>
+        <effects>
+          <para>For the two argument overload:
+<programlisting>
+size_t seed = 0;
+
+for(; first != last; ++first)
+{
+    <functionname>hash_combine</functionname>(seed, *first);
+}
+
+return seed;
+</programlisting>
+          </para>
+          <para>For the three arguments overload:</para>
+<programlisting>
+for(; first != last; ++first)
+{
+    <functionname>hash_combine</functionname>(seed, *first);
+}
+</programlisting>
+        </effects>
+        <notes>
+          <para>
+            <code>hash_range</code> is sensitive to the order of the elements
+            so it wouldn't be appropriate to use this with an unordered
+            container.
+          </para>
+          <para>This is an extension to TR1</para>
+          <para>
+            Forward declared in
+            <code>&lt;boost/functional/hash_fwd.hpp&gt;</code>
+          </para>
+        </notes>
+        <throws><para>
+          Only throws if <code><functionname>hash_value</functionname>(std::iterator_traits&lt;It&gt;::value_type)</code>
+          throws. <code>hash_range(std::size_t&amp;, It, It)</code> has basic exception safety as long as
+          <code><functionname>hash_value</functionname>(std::iterator_traits&lt;It&gt;::value_type)</code>
+          has basic exception safety.
+        </para></throws>
+      </overloaded-function>
+
+      </free-function-group>
+
+      <free-function-group name="Overloadable hash implementation (Boost extension).">
+
+      <!--
+        boost::hash_value - integers
+        -->
+
+      <overloaded-function name="hash_value">
+        <purpose><simpara>
+            Implementation of the hash function.
+        </simpara></purpose>
+
+        <signature>
+          <type>std::size_t</type>
+          <parameter name="val"><paramtype>bool</paramtype></parameter>
+        </signature>
+
+        <signature>
+          <type>std::size_t</type>
+          <parameter name="val"><paramtype>char</paramtype></parameter>
+        </signature>
+
+        <signature>
+          <type>std::size_t</type>
+          <parameter name="val"><paramtype>signed char</paramtype></parameter>
+        </signature>
+
+        <signature>
+          <type>std::size_t</type>
+          <parameter name="val"><paramtype>unsigned char</paramtype></parameter>
+        </signature>
+
+        <signature>
+          <type>std::size_t</type>
+          <parameter name="val"><paramtype>wchar_t</paramtype></parameter>
+        </signature>
+
+        <signature>
+          <type>std::size_t</type>
+          <parameter name="val"><paramtype>short</paramtype></parameter>
+        </signature>
+
+        <signature>
+          <type>std::size_t</type>
+          <parameter name="val"><paramtype>unsigned short</paramtype></parameter>
+        </signature>
+
+        <signature>
+          <type>std::size_t</type>
+          <parameter name="val"><paramtype>int</paramtype></parameter>
+        </signature>
+
+        <signature>
+          <type>std::size_t</type>
+          <parameter name="val"><paramtype>unsigned int</paramtype></parameter>
+        </signature>
+
+        <signature>
+          <type>std::size_t</type>
+          <parameter name="val"><paramtype>long</paramtype></parameter>
+        </signature>
+
+        <signature>
+          <type>std::size_t</type>
+          <parameter name="val"><paramtype>unsigned long</paramtype></parameter>
+        </signature>
+
+        <signature>
+          <type>std::size_t</type>
+          <parameter name="val"><paramtype>long long</paramtype></parameter>
+        </signature>
+
+        <signature>
+          <type>std::size_t</type>
+          <parameter name="val"><paramtype>unsigned long long</paramtype></parameter>
+        </signature>
+
+        <signature>
+          <type>std::size_t</type>
+          <parameter name="val"><paramtype>float</paramtype></parameter>
+        </signature>
+
+        <signature>
+          <type>std::size_t</type>
+          <parameter name="val"><paramtype>double</paramtype></parameter>
+        </signature>
+
+        <signature>
+          <type>std::size_t</type>
+          <parameter name="val"><paramtype>long double</paramtype></parameter>
+        </signature>
+
+        <signature>
+          <template><template-type-parameter name="T"/></template>
+          <type>std::size_t</type>
+          <parameter name="val"><paramtype>T* const&amp;</paramtype></parameter>
+        </signature>
+
+        <signature>
+          <template>
+            <template-type-parameter name="T"/>
+            <template-nontype-parameter name="N"><type>unsigned</type></template-nontype-parameter>
+          </template>
+          <type>std::size_t</type>
+          <parameter><paramtype>T (&amp;val)[N]</paramtype></parameter>
+        </signature>
+
+        <signature>
+          <template>
+            <template-type-parameter name="T"/>
+            <template-nontype-parameter name="N"><type>unsigned</type></template-nontype-parameter>
+          </template>
+          <type>std::size_t</type>
+          <parameter><paramtype>const T (&amp;val)[N]</paramtype></parameter>
+        </signature>
+
+        <signature>
+          <template>
+            <template-type-parameter name="Ch"/>
+            <template-type-parameter name="A"/>
+          </template>
+          <type>std::size_t</type>
+          <parameter name="val">
+              <paramtype>std::basic_string&lt;Ch, std::char_traits&lt;Ch&gt;, A&gt; const&amp;</paramtype>
+          </parameter>
+        </signature>
+              
+       <signature>
+          <template>
+            <template-type-parameter name="A"/>
+            <template-type-parameter name="B"/>
+          </template>
+          <type>std::size_t</type>
+          <parameter name="val"><paramtype>std::pair&lt;A, B&gt; const&amp;</paramtype></parameter>
+        </signature>
+
+        <signature>
+          <template>
+            <template-type-parameter name="T"/>
+            <template-type-parameter name="A"/>
+          </template>
+          <type>std::size_t</type>
+          <parameter name="val"><paramtype>std::vector&lt;T, A&gt; const&amp;</paramtype></parameter>
+        </signature>
+
+        <signature>
+          <template>
+            <template-type-parameter name="T"/>
+            <template-type-parameter name="A"/>
+          </template>
+          <type>std::size_t</type>
+          <parameter name="val"><paramtype>std::list&lt;T, A&gt; const&amp;</paramtype></parameter>
+        </signature>
+
+        <signature>
+          <template>
+            <template-type-parameter name="T"/>
+            <template-type-parameter name="A"/>
+          </template>
+          <type>std::size_t</type>
+          <parameter name="val"><paramtype>std::deque&lt;T, A&gt; const&amp;</paramtype></parameter>
+        </signature>
+
+        <signature>
+          <template>
+            <template-type-parameter name="K"/>
+            <template-type-parameter name="C"/>
+            <template-type-parameter name="A"/>
+          </template>
+          <type>std::size_t</type>
+          <parameter name="val"><paramtype>std::set&lt;K, C, A&gt; const&amp;</paramtype></parameter>
+        </signature>
+
+        <signature>
+          <template>
+            <template-type-parameter name="K"/>
+            <template-type-parameter name="C"/>
+            <template-type-parameter name="A"/>
+          </template>
+          <type>std::size_t</type>
+          <parameter name="val"><paramtype>std::multiset&lt;K, C, A&gt; const&amp;</paramtype></parameter>
+        </signature>
+
+        <signature>
+          <template>
+            <template-type-parameter name="K"/>
+            <template-type-parameter name="T"/>
+            <template-type-parameter name="C"/>
+            <template-type-parameter name="A"/>
+          </template>
+          <type>std::size_t</type>
+          <parameter name="val"><paramtype>std::map&lt;K, T, C, A&gt; const&amp;</paramtype></parameter>
+        </signature>
+
+        <signature>
+          <template>
+            <template-type-parameter name="K"/>
+            <template-type-parameter name="T"/>
+            <template-type-parameter name="C"/>
+            <template-type-parameter name="A"/>
+          </template>
+          <type>std::size_t</type>
+          <parameter name="val"><paramtype>std::multimap&lt;K, T, C, A&gt; const&amp;</paramtype></parameter>
+        </signature>
+
+        <signature>
+          <template>
+            <template-type-parameter name="T"/>
+          </template>
+          <type>std::size_t</type>
+          <parameter name="val"><paramtype>std::complex&lt;T&gt; const&amp;</paramtype></parameter>
+        </signature>
+
+        <signature>
+          <type>std::size_t</type>
+          <parameter name="val"><paramtype>std::type_index</paramtype></parameter>
+        </signature>
+
+        <signature>
+          <template>
+            <template-type-parameter name="T"/>
+            <template-nontype-parameter name="N">
+              <type>std::size_t</type>
+            </template-nontype-parameter>
+          </template>
+          <type>std::size_t</type>
+          <parameter name="val"><paramtype>std::array&lt;T, N&gt; const&amp;</paramtype></parameter>
+        </signature>
+
+        <signature>
+          <template>
+            <template-type-parameter name="T" pack="1"/>
+          </template>
+          <type>std::size_t</type>
+          <parameter name="val"><paramtype>std::tuple&lt;T...&gt;</paramtype></parameter>
+        </signature>
+
+        <description><para>
+          Generally shouldn't be called directly by users, instead they should use
+          <classname>boost::hash</classname>, <functionname>boost::hash_range</functionname>
+          or <functionname>boost::hash_combine</functionname> which
+          call <code>hash_value</code> without namespace qualification so that overloads
+          for custom types are found via ADL.
+        </para></description>
+
+        <notes>
+          <para>This is an extension to TR1</para>
+        </notes>
+
+        <throws>
+            Only throws if a user supplied version of
+            <code><functionname>hash_value</functionname></code>
+            throws for an element of a container, or
+            one of the types stored in a pair.
+        </throws>
+
+        <returns>
+          <informaltable>
+            <tgroup cols="2">
+              <thead>
+                <row>
+                  <entry>Types</entry>
+                  <entry>Returns</entry>
+                </row>
+              </thead>
+              <tbody>
+                <row>
+                  <entry><code>bool</code>,
+                    <code>char</code>, <code>signed char</code>, <code>unsigned char</code>, <code>wchar_t</code>,
+                    <code>short</code>, <code>unsigned short</code>,
+                    <code>int</code>, <code>unsigned int</code>, <code>long</code>, <code>unsigned long</code>
+                  </entry>
+                  <entry><code>val</code></entry>
+                </row>
+                <row>
+                  <entry><code>long long</code>, <code>unsigned long long</code></entry>
+                  <entry><code>val</code> when <code>abs(val) &lt;= std::numeric_limits&lt;std::size_t&gt;::max()</code>.</entry>
+                </row>
+                <row>
+                  <entry><code>float</code>, <code>double</code>, <code>long double</code></entry>
+                  <entry>An unspecified value, except that equal arguments shall yield the same result.</entry>
+                </row>
+                <row>
+                  <entry><code>T*</code></entry>
+                  <entry>An unspecified value, except that equal arguments shall yield the same result.</entry>
+                </row>
+                <row>
+                  <entry>
+                    <code>T&#160;val[N]</code>,
+                    <code>const&#160;T&#160;val[N]</code>
+                  </entry>
+                  <entry><code>hash_range(val, val+N)</code></entry>
+                </row>
+                <row>
+                  <entry>
+                    <code>std:basic_string&lt;Ch,&#160;std::char_traits&lt;Ch&gt;,&#160;A&gt;</code>,
+                    <code>std::vector&lt;T,&#160;A&gt;</code>,
+                    <code>std::list&lt;T,&#160;A&gt;</code>,
+                    <code>std::deque&lt;T,&#160;A&gt;</code>,
+                    <code>std::set&lt;K,&#160;C,&#160;A&gt;</code>,
+                    <code>std::multiset&lt;K,&#160;C,&#160;A&gt;</code>,
+                    <code>std::map&lt;K,&#160;T,&#160;C,&#160;A&gt;</code>,
+                    <code>std::multimap&lt;K,&#160;T,&#160;C,&#160;A&gt;</code>,
+                    <code>std::array&lt;T,&#160;N&gt;</code>
+                  </entry>
+                  <entry><code>hash_range(val.begin(), val.end())</code></entry>
+                </row>
+                <row>
+                  <entry><code>std::pair&lt;A, B&gt;</code></entry>
+                  <entry><programlisting>size_t seed = 0;
+<functionname>hash_combine</functionname>(seed, val.first);
+<functionname>hash_combine</functionname>(seed, val.second);
+return seed;</programlisting></entry>
+                </row>
+                <row>
+                  <entry><code>std::tuple&lt;T...&gt;</code></entry>
+                  <entry><programlisting>size_t seed = 0;
+<functionname>hash_combine</functionname>(seed, get&lt;0&gt;(val));
+<functionname>hash_combine</functionname>(seed, get&lt;1&gt;(val));
+// ....
+return seed;</programlisting></entry>
+                </row>
+                <row>
+                  <entry>
+                    <code>std::complex&lt;T&gt;</code>
+                  </entry>
+                  <entry>When <code>T</code> is a built in type and <code>val.imag() == 0</code>, the result is equal to <code>hash_value(val.real())</code>. Otherwise an unspecified value, except that equal arguments shall yield the same result.</entry>
+                </row>
+                <row>
+                  <entry>
+                    <code>std::type_index</code>
+                  </entry>
+                  <entry><code>val.hash_code()</code></entry>
+                </row>
+              </tbody>
+            </tgroup>
+          </informaltable>
+        </returns>
+      </overloaded-function>
+      </free-function-group>
+    </namespace>
+  </header>
+</library-reference>
+