Gathers the facts of an act and asks the issuance policy which semantics it has and whether it is allowed.
the protocol, the requested semantics, the actor, the subject, S's candidates, the targets and their kind, and may_act
the decision: whether it is allowed, whether a refusal is enforced, which rule refused, the semantics and the audience
Gathers the facts of an act and asks the issuance policy which semantics it has and whether it is allowed.