In the previous chapter, you were introduced to AutoLISP, AutoCAD's macro and programming language. You learned that you can take advantage of this powerful tool without really having to know anything ...

This hardware badge is a computer programmed with Lisp. You can write your own programs right on the badge using the built-in keyboard, as long as you know Lisp. If there’s one thing we really like to ...

Sometimes an AutoLISP program needs to open an existing file, because you want to either read data from it or add data to it. To demonstrate this kind of file management and to show you a little more ...