AutoCAD, developed by Autodesk, has been a standard tool for creating 2D and 3D models, drafting, and design for over three decades. While its user-friendly interface and extensive feature set make it an indispensable tool for designers, architects, and engineers, its true power lies in its customization capabilities. LISP, a programming language developed in the 1950s, has been an integral part of AutoCAD since its early versions. LISP enables users to create custom functions, automate tasks, and develop applications that can significantly enhance their productivity.