TELL-INSTANCE-VALUES ==================== syntax: (tell-instance-values <evaluates-to relation-name> <evaluates-to instance-spec> <set> [:write-dependents {T | NIL | Var}] [:probe {T | NIL | :and-do | Var}]) This function adds all elements of the set, which are not included yet, to the value set of the instance relation. If ':write-dependents' is not set to NIL, then the write-dependents will be informed after the value set is changed. The value set will be returned, when it was changed, otherwise NIL will be returned. example: >(tell-instance-values 'offer Paris {Louvre}) NIL >(tell-instance-values 'offer Paris {Louvre Centre-Pompidou}) #<set-of OFFER (...)>