If you can provide more context (e.g., what software or task it's for), I may be able to suggest safer alternatives or legitimate sources.
Once loaded, type in the command line to start the routine.
The AutoCAD community has historically been targeted by malicious files, most famously the Acad.vlx virus
It is a "compiled" version of LISP code, meaning you cannot open it to read or edit the underlying script.
He hadn't seen that extension in a decade and a half.