Prologues and epilogues are (logically) loosely coupled by the guard. This loose coupling is intimated by the dashed arrow. The guard implements a sluice of epilogues and en-sures that at a moment in time only one epilogue may be active.
Prologues and epilogues are (logically) loosely coupled by the guard. This loose coupling is intimated by the dashed arrow. The guard implements a sluice of epilogues and en-sures that at a moment in time only one epilogue may be active.