"Allows you to select multiple objects in a group of linked objects (e.g. - all of the bones of a finger) - and rotate all of the items at the same time. If you tried this in Max using the built-in rotate - you'd find that only the top most object (i.e. - the one that is the parent of all of the other objects) would rotate. So - in order to get the finger to curl using Max rotations - you'd have to select and rotate each bone in turn. With this script - you can select all of the bones and rotate them together at the same time."