* </optgroup> <optgroup>
* <p> <optgroup> </p>
* <li> <optgroup> </li>
* <tr> <optgroup> </tr>
* <td> <optgroup> </td>
* <th> <optgroup> </th>
* <body> <optgroup> </body>
* <colgroup> <optgroup> </colgroup>
* <dd> <optgroup> </dd>
* <dt> <optgroup> </dt>
* <head> <optgroup> </head>
* <html> <optgroup> </html>
* <option> <optgroup> </option>
* <tbody> <optgroup> </tbody>
* <tfoot> <optgroup> </tfoot>
* <optgroup style="color:red"
*
* > <!--HTML COMMENT-->
