="special">;</span>         
  <span class="keyword">typedef</span> <span class="identifier">base_type</span><span class="special">::</span><span class="identifier">string_type</span>                                <a name="boost.local_time.custom_time_zone_base.string_type"></a><span class="identifier">string_type</span><span class="special">;</span>       
  <span class="keyword">typedef</span> <span class="identifier">base_type</span><span class="special">::</span><span class="identifier">stringstream_ty