enter" valign="top"><b>Required</b></td>
  </tr>
  <tr>
    <td valign="top">title</td>
    <td valign="top">Title of the group</td>
    <td align="center" valign="top">Yes, unless nested <code>&lt;title&gt;</code> given</td>
  </tr>
  <tr>
    <td valign="top">packages</td>
    <td valign="top">List of packages to include in that group. Multiple packages are separated with ':'.</td>
    <td align="center" valign="top">Yes, unless nested <code>&lt;package&gt;</code>s given</td>
  </tr>
</table>

<p>The titl