to change the set of actors
The so called instruction of a clause atom.
This feature is present on objects of type clause_atom.
The value is something like
A paragraph or subparagraph is started with the changing of the actual set of actors, through the introduction of an explicit NP-subject, typically by a WayX or WXQt clause.
The instruction can: * Add an actor to the (empty) set * Reverse the roles in the set of actors: parallel connection * Suspend other actors in the set
More clarification needed as to what the values mean.