|Start a composition.
|Halt a composition entirely but finish writing test data. A stopped composition cannot be resumed.
|Halt a composition and do not finish writing test data. An aborted composition cannot be resumed.
|Halt a composition with the intention of resuming it. This does not end a composition as a stop or abort does.
|Continue playing a composition after it has been paused.
|Remove a composition from memory. This is the opposite action of load a composition.