pan><span class="special">[</span><span class="number">5</span><span class="special">]</span></code>. This example also shows that the number of
      template parameters in a partial specialization does not have to match the
      number in the default template. However, the number of parameters that appear
      after the class name do have to match the number and type of the parameters
      in the default template.
    </p>
<h5>
<a name="boost_typetraits.background.h2"></a>
      <span class="phrase"><a