Ops on KBs, Frames, Classes, Instances
Operations on knowledge bases
create-kb, open-kb, close-kb, copy-kb, save-kb, find-kb, …
Operations on frames
create-frame, delete-frame, copy-frame, get-frame-name, get-kb-frames, …
Operations on classes
create-class, add-class-superclass, remove-class-superclass, class-p, get-class-instances, get-class-subclasses, instance-of-p, subclass-of-p, …
Operations on instances
add-instance-type, get-instance-types, remove-instance-type, type-of-p, …