Reserved word which behaves like an object reference when used in an INVOKE statement. Like SELF, it enables an object to send a message to itself, but the search for a matching method starts in the code of the method's superclass. If used from an instance, the run-time system searches for a method beginning with the instance code of the superclass, and works its way up through the instance methods of all the superclasses until it finds a method matching the message. If used from a class method, the run-time system searches for a class method beginning with the class object code of the superclass and works its way up through the class methods of all the superclasses until it finds a method matching the message. Unlike SELF, and SELFCLASS, SUPER is not a data item containing an object handle; you can't pass SUPER as a parameter to a method.