;; Comments can go after the semi colon
(princ "\nPRINC TO COMMANDLINE BY LOADING/EVALUATE THE *.LSP FILE!")
(princ "\nNow we define a lisp-defined AutoCAD-Command called 'HELLOWORLD'")
(princ "\nAutocad-command HELLOWORLD is defined NOW")
(princ "\n HelloWorld loaded, start HELLOWORLD with command: HELLOWORLD or with (c:HELLOWORLD)")
(princ)

 (defun c:HELLOWORLD nil
   (princ)
   (princ "\n Hello World!")
  (princ)
)