Share Email Facebook Twitter LinkedIn null (AutoLISP) 2013-04-10 Product Documentation Intermediate View Original Verifies that an item is bound to nil (null item) Arguments item An AutoLISP expression. Return Values T if item evaluates to nil; otherwise nil. Examples Command: (setq a 123 b "string" c nil) nil Command: (null a) nil Command: (null b) nil Command: (null c) T Command: (null '()) T Related References not (AutoLISP)