OptionalallowWhether sync is on. For the presenter this is "share my actions"; for a follower, "follow the presenter".
Identifies the open score. Commands for a different score are ignored, so use the same id on every client.
True for the one participant whose actions everyone else follows.
The local user's id, as the relay knows it.
OptionalonCalled when a published command could not be delivered.
Called with each command a follower should apply to its player.
OptionalpresenterThe presenter's user id. A follower applies a command only when its sender matches. Until this is known, followers ignore every command, unless UseMusicXmlPlayerSyncOptions.allowUnverifiedPresenter is set.
Apply commands from any sender while
presenterIdis empty. Any participant can then drive every follower's player, so leave this off unless every participant is trusted.