ABSTRACT
The Visual in Visual LISP comes from its development environment. Before Visual LISP and its IDE (Integrated Development Environment), AutoLISP developers had to use text editors or word processors, which know nothing about LISP syntax and requirements. Testing involved loading the files into AutoCAD to see whether they worked. Debugging tools were left to the invention of the programmer. To improve this situation, independent developers created tools, one of which evolved into Visual LISP.
