[Zope] Custom tags with zope

[Van Lindberg]

Is it possible to create custom tags with Zope?  For example:

Say I would like to create a newsbox using tables, something that, when processed,
would return something like this:

<table BORDER=0 CELLSPACING=0 CELLPADDING=5 COLS=1 WIDTH="100%" BGCOLOR="<--user
defined color 1-->">
  <tr>
    <td>
      <table BORDER=0 CELLSPACING=0 CELLPADDING=5 COLS=1 WIDTH="100%"
BGCOLOR="<--user defined color 2-->">
        <tr>
          <td>
             <STRONG><--user defined headline--></STRONG><br>

       Some content

         </td>
        </tr>
      </table>
    </td>
  </tr>
</table>

I'd like to be able to do this by writing something like <dtml-newsbox
red,white,"This is the headline">
Some content
</dtml-newsbox>


Even more ideal would be some method that provided a nice forms interface, like the
one for dtml methods, but with the special fields:

Outside Color: [_______________________]

Inside Color:    [_______________________]

Headline:        [__________________________________]

Text:               [------------------------------]
                      |  Some content                                      |
                      |                                                           |

                     [___________________________________]


Is this possible?  Any ideas/links on how to do it?

Thanks, VanL