</span><span class="special">;</span>               <span class="comment">// iterator for iteration over intervals </span>
  <span class="keyword">typedef</span> <span class="identifier">ImplSetT</span><span class="special">::</span><span class="identifier">const_iterator</span>                                     <a name="boost.icl.separate_interval_set.const_iterator"></a><span class="identifier">const_iterator</span><span class="special">;</span>         <span class="comment">// const_iterator for iterat