parse_info</tt> structure parameterized by 
  the iterator type passed in. The parse_info struct has these members:</p>
<table width="90%" border="0" align="center">
  <tr> 
    <td colspan="2" class="table_title"><b>parse_info</b></td>
  </tr>
  <tr> 
    <td width="14%" class="table_cells"><b>stop</b></td>
    <td width="86%" class="table_cells">Points to the final parse position (i.e 
      The parser recognized and processed the input up to this point)</td>
  </tr>
  <tr> 
    <td width="14%" class="tab