pan class="special">&amp;</span><span class="special">,</span> <span class="identifier">char_type</span><span class="special">,</span> <span class="keyword">const</span> <span class="identifier">tm</span> <span class="special">&amp;</span><span class="special">,</span> 
                    <span class="identifier">string_type</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>

  <span class="comment">// public data members</span>
  <span class="keyword">sta