Originally sent to https://bugs.launchpad.net/ubuntu/+source/unclutter/+bug/838172 From man unclutter: "-jitter is followed by the amount of movement of the pointer that is to be ignored and considered as random noise. The default is 0. " This doesn't give a clue of what units the "amount of movement" is measured in. Is it pixels? Pixels/second? Is it 0 for 0 sensitivity and 1 for maximum sensitivity? Whatever it is it should be explicitely mentioned in the man page.