<td class="table_cells">A metafunction that returns a match type given an 
      attribute type (see In-depth: The Parser)</td>
  </tr>
  <td class="table_cells"><b>no_match</b></td>
  <td class="table_cells">Create a failed match</td>
  </tr>
  <td class="table_cells"><b>empty_match</b></td>
  <td class="table_cells">Create an empty match. An empty match is a successful 
    epsilon match (matching length == 0)</td>
  </tr>
  <td class="table_cells"><b>create_match</b></td>
  <td class="table_cells">Create