it'd be useful to be able to make boxes checked at startup, I'm making a test environment where I have a bunch of controls I want to toggle on and off through checkboxes
I want them all visible when you startup, and you can uncheck them to make them invisible. also, I wanted to make it, so you can check or uncheck 'all' and it will automatically check or uncheck the rest of the checkboxes. but there is no action to control the checking of a checkbox, so I can't do any of that.
also, I tried to make an action where if mouse is over a button and left button is down something happened, since there is no "is pressed" action for buttons, and I wanted the button to continue to change a value as it was held. even though it lets me set these conditions for mousekeyboard, it doesn't acknowledge them