DEFINE-INSTANCE =============== syntax: (define-instance <instance-name> OF <frame-name> [:DOCUMENTATION <documentation>] [:EXPLANATION <explanation>] {<relation-name> ([:VALUE {'{'<lisp-type: T>*'}'| <lisp-type: T>} [:READ-DEPENDENTS (<lisp-type: T>*)]| [:WRITE-DEPENDENTS (<lisp-type: T>*)]}*) Warning: The explanation facility is not sup- ported, hence :documentation and :explanation are ignored. The instance definition defines the single instances of the frames. See the page on RELATION-SPECIFICATION, too! example: >(define-instance Louvre of museum) :documentation "" :explanation nil place (:read-dependents (traffic-office-Paris)) theme ())