/span><span class="special">::</span><span class="identifier">value_type</span>                                         <a name="boost.icl.separate_interval_set.data_type"></a><span class="identifier">data_type</span><span class="special">;</span>              <span class="comment">// data type of the implementing container </span>
  <span class="keyword">typedef</span> <span class="identifier">ImplSetT</span><span class="special">::</span><span class="identifier">value_type</span>                          