Record any sequence of commands from the controller and then playback this sequence 1:1.

MAX Rec is incredibly useful, in particular Racing Games, Fighting Games and Guitar/Band based Games. For example you may wish to help a friend finish a Guitar Hero song on an extremely difficult level. With MAX Rec You can record the sequence of commands while playing Guitar Hero and then send the file to your friend, he can then use the MAX Rec plugin to load the file and reproduce the sequence that you created.