From personal experience:
- F 1-8, 10, 12 work (the other ones probably do too, I just don't use them)
- Numpad 1, 2, and 6 work
- Numpad 0 (morale) can cause the trainer to stop responding
- Numpad 3 (instant movement) doesn't seem to do anything
I haven't tried the other ones, but at least a...