An edge the definition carries for itself: the trail names it, a retrace can
take it again and the registry-derived reachability follows it, but no handle
shows it. The only way to take the transition is the action that performs the
person's input first; actionEdge marks one declared outside a handle's
surface. The brand is a type only, like ScreenEdgeBound.
An edge the definition carries for itself: the trail names it, a retrace can take it again and the registry-derived reachability follows it, but no handle shows it. The only way to take the transition is the action that performs the person's input first;
actionEdgemarks one declared outside a handle's surface. The brand is a type only, likeScreenEdgeBound.