@is_stopped()
this predicate returns true if the Antescofo system is idle, waiting for a command or for an input message.

This predicate always returns true in a program. But it can be false if used in an expression evaluated using a ::antescofo antescofo::playstring command.

See also @is_fastforward, @is_following_on, @is_paused, @is_playing_on, @is_running, and @is_stopped.