> par_begin<span class="special">,</span> 
                                 <span class="identifier">ParamIter</span> par_end<span class="special">)</span><span class="special">;</span>
    <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> ParamType<span class="special">,</span> <span class="keyword">typename</span> ParamIter<span class="special">&gt;</span> 
      <span class="emphasis"><em><span class="identifier">unspecified</span></em></span> <a 