
          points to the last position in the input sequence. <code class="computeroutput"><span class="identifier">i</span></code>
          points to the position in the input sequence following the last character
          that was consumed by the rule.
        </p>
<p>
          A success handler can be used to annotate each matched rule in the grammar
          with additional information about the portion of the input that matched
          the rule. In a compiler application, this can be a combinatio