attribute</span><span class="special">&lt;</span><span class="identifier">Context</span><span class="special">&gt;</span></code>
          nested metafunction.
        </p>
<p>
          <span class="emphasis"><em>val</em></span> starts out default initialized. This val is the
          one we'll pass to the subject's parse function.
        </p>
<p>
          The kleene repeats indefinitely while the subject parser is successful.
          On each successful parse, we <code class="computeroutput"><span cla