OptionalarbiterOptionalbankwhere an effect given by id is looked up
Optionalcaptionshown with each play when the definition has no caption of its own
Optionalframethe game's own frame counter, never the wall clock, so seeds repeat across runs; 0 when omitted
Optionalvolumelevel, 0 to 1; 1 when omitted
the shared voice limit; none means a voice is never cut for another