LISP first appeared in CAD when, back in 1985, Autodesk added an undocumented feature to AutoCAD ® v2.15 called “Variables and Expressions.” Programmers at Autodesk had taken XLISP, a public domain dialect written by David Betz and adapted it for AutoCAD ®. Its name is short for “list processing,” and it was designed to handle lists of words, numbers, and symbols. LISP is one of the earliest programming languages, developed in the late 1950s to assist artificial intelligence research. Compatability Between BricsCAD and AutoLISP.The following topics are covered in this post: While toolbar and menu macros are easy to write and edit, they limit your ability to control BricsCAD. You will also learn how to do simple addition in LISP. ![]() You will learn what LISP is and how it works in BricsCAD. In this post, we look at the most powerful method available to “non-programmers” for customizing BricsCAD ® - the LISP programming language - at the cost of being somewhat more difficult to create than macros or scripts.
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