If you’re using AutoCAD for long period of time and you know how to use the AutoLISP and the importance of it. You probably know how to load the AutoLISP file in AutoCAD, and you certainly don’t need to read this tutorial. But if happens that you are relatively new on using the AutoCAD and you want to expand your knowledge in this drawing application software, then this tutorial is for you.

I know all of us AutoCAD users, has experienced losing our drawing files when a program system failure came unexpectedly. Or sometimes when a power failure or a software problem happens right in the middle of doing our work. And because it is too sudden, most of the times we haven’t saved our drawings.