pan>                <span class="comment">// Base actor type. </span>

  <span class="comment">// <a class="link" href="format_named_scope_actor.html#boost.log.expressions.format_named_scope_actorconstruct-copy-destruct">construct/copy/destruct</a></span>
  <span class="keyword">explicit</span> <a class="link" href="format_named_scope_actor.html#idm28051-bb"><span class="identifier">format_named_scope_actor</span></a><span class="special">(</span><span class="identifier">base_type</span> <span class="keywor