AutoLISP is an AutoCAD programming language that allows AutoCAD users to create their own programs to customize AutoCAD. AutoLISP programming is one of the simplest language for customization of AutoCAD and is very easy to learn and use. AutoLISP which is derived or customized version of LISP (List processing) programming language which is also known as Lost In Stupid Parenthesis.
AutoLISP language which is used to customize AutoCAD from AutoCAD 2.0 versions till now, which is very much useful to extend and make professional AutoCAD extensions.
AutoLISP is mainly used for 2 major extensions of AutoCAD and other AutoDESK products.
1) AutoLISP can be automated for repetative procedures.
2) The other extension would be to create a completely new command in AutoCAD and other CAD Application which support LISP programming.
IntelliCAD is another application which can run LISP.
AutoLISP file is ASCII text file, written on a notepad and is been compiled at runtime by AutoCAD when it is been loaded. Later AutoCAD brought an encripted version of lisp file.
Now commonly known as encripted lisp file (*.fas) files.
Continue with the tutorials in next chapter to learn to write your first program in AutoLISP.