




Defines a new CLOS class as defclass does. However, if none of the given superclasses is a subclass of named-kb-object, then named-kb-object is added to the list of superclasses. The class inherits a name slot kb-name of which the initialization form (:initform) generates a symbol from the class name using (gentemp class-name).
(def-named-kb-class vehicle ()
((driver :initarg :driver)))
(def-named-kb-class truck (vehicle)
((load :accessor truck-load)))
KnowledgeWorks and Prolog User Guide (Windows version) - 24 Mar 2017