pe</span>                          <a name="boost.local_time.custom_time_zone_base.stringstream_type"></a><span class="identifier">stringstream_type</span><span class="special">;</span> 
  <span class="keyword">typedef</span> <span class="identifier">date_time</span><span class="special">::</span><span class="identifier">time_zone_names_base</span><span class="special">&lt;</span> <span class="identifier">CharT</span> <span class="special">&gt;</span>              <a name="boost.local_time.custom_time_zone_