Hi y'alls... I wrote this simple thing (see below) in order to automate the locking of all viewports in a drawing. I now need to be able to toggle them on and off with the same button. Is there a lisp way to check if a viewport is locked or not ? I looked in the DXF reference but found nothing suitable. Thanx a bunch Pierre (DEFUN c:mvlock (/ mvss) (setvar "cmdecho" 0) ;; Gets all VIEWPORT entities (SETQ mvss (SSGET "X" '((0 . "VIEWPORT")))) ;; Locks them (COMMAND "_.vports" "L" "ON" mvss "") (PRINC) ) ;_ end DEFUN