BEGINNER LISP - LESSON 4 - OUR FIRST LISP PROGRAM

In Beginner AutoLISP Lesson 4, we create a working AutoLISP program that we would actually be able to use in a real work situation to save time.
There is still plenty of room for improvement. Important learning concepts are still to come in later tutorials.

[sreekanthkr]

this too


(defun C:L1 (/)
(if (=(tblsearch "layer" "MY LAYER") nil)
(command "-layer" "m" "MY LAYER" "C" "8" " " " " ); LAYER MAKE CLOSE
(alert "SREEKANTH SAYS LAYER ExIST."); ALTER CLOSE
); IF CLOSED
);DEFUN CLOSE