the command line. </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>typeDesc</em>&nbsp;</td><td>- A short, human readable description of the type that this object expects. This is used in the generation of the USAGE statement. The goal is to be helpful to the end user of the program. </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>v</em>&nbsp;</td><td>- An optional visitor. You probably should not use this unless you have a very good reason. </td></tr>
  </table>
  </dd>
</dl>

<p>