You know, B is great. Really great. But sometimes you just want a little more control than a single rectangle is going to offer you. And that's where Shift and Control come in handy.

In other news, AGA support is doing well on at least the technical side, if not the understanding specific events side. You can edit their parameters just as well as those of ordinary events, with the interface more or less held constant between the two versions of the window, and as far as I can tell all the information is being saved properly.