class="keyword">typedef</span> <span class="identifier">base_type</span><span class="special">::</span><span class="identifier">iterator</span>                                                                                              <a name="boost.icl.map.iterator"></a><span class="identifier">iterator</span><span class="special">;</span>                  
  <span class="keyword">typedef</span> <span class="identifier">base_type</span><span class="special">::</span><span class="identifier">const_iterato