Classes
 ClassDescription
 ControllerEvent This event is created by controller classes in the Motion package.
 MotionEvent This base event is created by any of the classes in the motion package.
 PhysicsEvent This event is created by the BasicPhysics class in the motion package.
 SequenceEvent This event is created by the Sequence class in the Motion package.
 TweenEvent This event is created by any of the tween classes in the motion package.