Built in PHP functions

Sorry, but can't seem to find anything on this. What if I want to do something basic like using strtoupper();? How/where does that integrate with TBS?

Parameter 'onformat' for a single fields, or parameter 'onsection' for a record set.

ok, i saw that, but not very sure how to use it...

on the HTML side, can I just do:

No, you can't.
Unfortunalty string formats are not yet supported in TBS. And for security reasons, you have to code your own functions for 'onformat'.