[Zope] tags for tree tags?

[Ethan Fremen]

I noticed that tree attains it's look through the use of tables.
I'm attempting to avoid the use of tables except for tabular data, for a
number of reasons, not the least of which that I want to appeal to a
blind audience.

Also, I want to do trees 'backwards':
            Item1 -
       Subitem1 +
       Subitem2 -
  subSubitem1 +

etcetera.

What do I need to do to control the formatting of the tables? I'd like
to do it purely through css margin-right calls.

Thanks,

~mindlace