Maybe Dumb

[Drumstix42]

If you are referring to buttons/elements in the stock UI, 99% of those buttons don't use UI scripting to function. They're hardcoded from the servers end and their functionality is based off their element's name matching properly (and being in the right part of the xml structure).

There's only a few places where the standard UI elements use things like "onpress" etc, mostly just so we can be able to modify them if needed.