n
      is specified</td>
  </tr>
  <tr>
    <td valign="top">value</td>
    <td valign="top">The replacement string.</td>
    <td align="center" rowspan="2">Either may be specified, but not both. Both can be omitted, if desired.</td>
  </tr>
  <tr>
    <td valign="top">property</td>
    <td valign="top">Name of the property whose value is to serve as the replacement value.</td>
  </tr>
</table>
<p>Since Ant 1.8.0 token and value can be specified as nested elements
  just like in the task itself.</p>
<p>If 