li>
<li class="listitem">
              If successful, <code class="computeroutput"><span class="identifier">first</span></code>
              is incremented N number of times, where N is the number of characters
              parsed. N can be zero --an empty (epsilon) match.
            </li>
<li class="listitem">
              If successful, the parsed attribute is assigned to <span class="emphasis"><em>attr</em></span>
            </li>
<li class="listitem">
              If unsuccessful, <code class="co