David,
Not quite what I'm asking for. I understand how to use reverse with audio and MIDI, as in, how to apply a reverse effect. Sorry if the question wasn't properly explained. My real question is whether or not I can automate reverse on the fly. As in, with my capslock keyboard, hold down the key 'A', for example, and have what's ever on that track reverse while the key is held down, and when released, the reverse effect ceases. Is this possible?