"special">&lt;</span> <span class="identifier">date_type</span><span class="special">,</span> <span class="identifier">CharT</span> <span class="special">&gt;</span> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>

  <span class="comment">// <a class="link" href="period_parser.html#id-1_3_14_15_3_37_1_1_1_15-bb">public member functions</a></span>
  <span class="identifier">period_range_option</span> <a class="link" href="period_parser.html#id-1_3_14_15_3_37_1_1