Situated Control Rules (SCRs) in ERE
The user can also (but need not) provide a set of Situated Control Rules (SCRs), which are used by the Projector as search control to reduce the number of alternatives considered and as a program by the Reactor to be manifested as behavior in the external world (In this case, SCRs serve as a means toward situated action. Basically, each SCR is a recommended action for a given situation.
SCRs can also, by means of learning, become refined due to goal-satisfying behaviors synthesized by the projector, or generalized by means of a goal regression algorithm.