AutoLISP is a programming language designed for extending and customizing the functionality of AutoCAD.
It is based on the LISP programming language.
AutoLISP is "inBuilt" for use with the full version of AutoCAD and it does not work with AutoCAD LT.
AutoLISP code does not need to be compiled, so you can enter the code at a Command line and immediately see the results.
Means NO NEED to download AutoLISP and you can use from your command line with your full version of autocad.
Thank you!
