Anyone know why Self() can be used in a Conditional Formatting calc on a text box, but not a button parameter?

I know why - how does that help?

It would help me understand Filemaker better.

Fair enough. A button is actually a group of two objects - the text object and the button object (if you ungroup a button, the text object remains, and the button part sort of vanishes). Therefore the button part has no concept of the text object as part of self.

I see. So a button is an object in itself that can't exist unless it's attached to another object. And by using the button tool, I'm actually creating two objects, a pre-made button/text box combo. And conditional formatting can only apply to things that can contain text: fields, text boxes, and web viewers (though I can't figure out any usefulness for applying conditional formatting to the latter).

Thanks.