This is a M4L MIDI transformation tool for Ableton.
It can scale velocities, pitches and durations.
(for instance remap a midi sequence with velocities from 20-80 to 40-80, which would be tricky with the MIDI editor alone)
It's possible to specify a range for the beginning of the sequence and one for the end.
It can retrieve values from the sequence, invert values, link times or not.