@domenicomaria,
I've been here 20+ years, but don't think I qualify as guru, but anyway . . .
If I was still programming Lisp regularly I wouldn't use xdrx at this point in time.
My decision is based on a requirement for long term support, transparency, continuity and confidence in the product either through documentation or open source code. It just wouldn't be fair to my clients to use the product
Very few lispers use the built in Visual Lisp and ActiveX Functions to anywhere near capacity, in fact, most seemingly hardly read the documentation. What is the situation going to be like when the documentation needs to be interpreted from samples without technical descriptions.
The return on investment in studying lisp would probably increase productivity exponentially and safely.
. . . as would participating in peer support instead of just taking code produced by others.
As well as producing better code we would become more employable through expertise using the tools provided with the base product.
Some people are sure to not agree with me. . . . but you did ask.
added:
From the Github site:
Autolisp development library written in ObjectARX
The API of this project is only for personal study and research. Please do not use it for commercial purposes. I will not be responsible for any previous consequences caused by this.