Cadsta max. It draws intelligent walls, doors, and windows; generates elevations and cross sections directly from floor plans. It loads LISP, ARX & . Install the software using the executable file you just downloaded. Please, follow the video and the instructions below to load AVCAD. NET in ACAD LT seamlessly with no recompile required. more CADSTA Software is a range of CAD add-on software designed to maximize the benefits of AutoCAD and AutoCAD LT. NET applications to interoperate with AutoCAD LT. It loads a wide range of AutoCAD-based add-ons seamlessly. 3. The family of CADSTA Software includes CADSTA Elements, CADSTA Tools, CADSTA Max, CADSTA Plus and CADSTA Arch.