Thanks, Patrick. Actually one of the other cad operators caught the extra
parenthesis. By then I had it working by loading it in acad.lsp and
placing (OS) on my button. I like the tip about the one/two process, and I
have always wondered about the error trapping process. Now I see that it
is used to prevent the Autolisp evaluator from handling the error and
letting the particular lisp prrogram report on the error. -Bob Woolston