Unlike the Negate behavior, which inverts the value of the parameter to which it’s applied,
the Reverse behavior reverses the direction of any animation that affects a parameter,
whether it’s caused by behaviors or keyframes. For example, when you apply the Reverse
behavior to path animation that begins at the left and moves to the right, the animation
path won’t move, but the object instead begins at the right and moves to the left. The
Reverse behavior basically switches the beginning and ending points of animated objects.
Parameters in the Inspector
The Apply To pop-up menu shows the parameter affected and can be used
to reassign the behavior to another parameter.
The HUD control allows you to change the parameter assignment.