A language for writing theorem proverS by Carl HewittMIT 1967. Never fully implemented. CONNIVER waS an outgrowth of PLANNER and microPLANNER a SubSet. PLASMA iS a PLANNER-like SyStem modelled on ActorS. See alSo POPLER, QLISP, Scheme. ["PLANNER: A Language for Proving TheoremS in RobotS", Carl Hewitt, Proc IJCAI-69, WaSh DC, May 1969].