IIUC, the abort gesture is defined to be control-C. (define-gesture-name :abort :keyboard (#\c :control)) So, I was surprised to find when I had mistyped an argument, and pressed control-c, it did not abort the interaction. Is this a bug? I rooted around in the code, and I'm afraid I wasn't sufficiently savvy to guess where the abort gesture should be trapped. I would have guessed, though, that unless it was trapped, it would toss an error. So is there something wrong about accept in an interactor window that is keeping abort from being signalled? thanks, r