[...]

>But I sort of wanted to use ON SELECTION BAR to jump to the form but could not figure out how to do that e.g.
>

>ON SELECTION BAR <bar> THIS.ioCallingForm.DeleteDocument()
>

>Reading the help, I see why: you can only execute a command. So I would need to call a .prg or a procedure in some procedure file (and then I would suspect that there would be problems anyhow as a popup is sort of just "out there" on it's own i.e. I am not sure I could get back to the last active form anyhow.
>
>So my question: is this the only real design for a class if I need to be able to reference something on the calling form or calling object?
>
>Thanks,
>Albert

You can access the methods of the active form trough _SCREEN.ActiveForm.

For instance:

ON SELECTION BAR <bar> _SCREEN.ActiveForm.DeleteDocument()