no dynamic columns for tr:table

[Renzo Tomaselli]

Hi, for the purpose of replacing existing facelets using Tomahawk 
components through Trinidad ones, I noticed that nothing like t:columns 
seems to exist in Trinidad. Only a single tr:column is documented, 
leading to static tables only.
A multiple column component is very useful for rendering runtime-defined 
(e.g. non static) column sets.
Is there another component covering this role or is this feature 
definitely missing ?
Furthermore, I guess that t:dataTable/t:columns/t:column are closely 
connected, the same also for tr:table/tr:column. Or can I mixup tr:table 
with t:columns ?
Thanks -- Renzo