                    The function or function object <code class="computeroutput"><span class="identifier">fa</span></code>
                    is expected to provide the value to generate output from to the
                    generator <code class="computeroutput"><span class="identifier">g</span></code>.
                  </p>
                </td>
</tr></tbody>
</table></div>
<p>
          The possible signatures for functions to be used as semantic actions are:
        </p>
<pre class="programlisting"><