</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">pair</span><span class="special">&lt;</span> <span class="identifier">key_type</span><span class="special">,</span> <span class="identifier">mapped_type</span> <span class="special">&gt;</span>                          <a name="boost.interprocess.flat_map_index_aux.value_type"></a><span class="identifier">value_type</span><span class="special">;</span>          
  <span class="keyword">typedef</span> <a class=