"special">,</span><span class="identifier">n</span><span class="special">}</span></code>
          </li>
<li class="listitem">
            Concatenation
          </li>
<li class="listitem">
            Anchoring ^$
          </li>
<li class="listitem">
            Alternation <code class="computeroutput"><span class="special">|</span></code>
          </li>
</ol></div>
<h5>
<a name="boost_regex.syntax.basic_extended.h27"></a>
        <span class="phrase"><a name="boost_regex.syntax.basic_extended.what_gets