Check out Walker's ATLAST (the idea more than the specific implementation, I mean.) https://www.fourmilab.ch/atlast/ https://www.fourmilab.ch/atlast/ > Most

Check out Walker's ATLAST (the idea more than the specific implementation, I mean.) https://www.fourmilab.ch/atlast/ https://www.fourmilab.ch/atlast/ > Most programs start out as nonprogrammable, closed applications, then painfully claw their way to programmability through the introduction of a limited script or macro facility, succeeded by an increasingly comprehensive interpretive macro language which grows like topsy and without a coherent design as user demands upon it grow. Finally, perhaps, the program is outfitted with bindings to existing languages such as C. > An alternative to this is adopting a standard language as the macro language for a product. After our initial foray into the awful menu macro language that still burdens us, AutoCAD took this approach, integrating David Betz’ XLISP, a simple Lisp interpreter which was subsequently extended by Autodesk to add floating point, many additional Common Lisp functions, and, eventually, access to the AutoCAD database.