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	Class	Description
	PlayableGroup	Batch-play a set of items and receive an event when all of them have finished.
	Sequence	Simple playable sequence, composed of groups of playable items.
	SequenceBase	This base class should not be used directly, use it to build sequencing classes.
	SequenceCA	Sequence with "Custom Advance" options, in which steps can specify when they should advance.
	SequenceStep	A PlayableGroup wrapper for playable items in a sequence step.
	SequenceStepCA	Step class used with SequenceCA that adds custom sequence-advance options so steps can determine when they advance, such as after a duration or after one item in the step completes.