s="identifier">base_type</span><span class="special">::</span><span class="identifier">char_type</span>                         <a name="boost.log.sources.basic_channel_logger.char_type"></a><span class="identifier">char_type</span><span class="special">;</span>          <span class="comment">// Character type. </span>
  <span class="keyword">typedef</span> <span class="identifier">base_type</span><span class="special">::</span><span class="identifier">final_type</span>                        <a name="boost