Poppy (EBLanguageImpl) can't deal with "Class: Foo OtherField:", nor with "Class: Foo OtherField: ThirdField: Bar"

CaptureButtons is disabled (commented out) in ButtonClassesImpl. It should be put back in when editor Inbutton routines work.

Radio buttons should generate some type of event when they are pressed, but already on. It should not be a (State TRUE) event. It is currently a (StateStill TRUE) event, but I don't love this. Because of the matching algorithm used for feedback, (State Still TRUE) will always match (State TRUE), because it's more specific, and it's not necessarily desirable for it to do so.

Not all examples (e.g. Buttonize.tioga) work perfectly. You should go through them carefully. But then, you knew that.