[cacb]

AngelCAD is not a "another CAD Exchange format". It is a scripting tool that creates existing standard formats such as STL, OBJ, OFF, DXF, SVG and more. It also reads some of those exchange formats. There is no new exchange format.

STEP is an entirely different domain.

[rjsw]

I guess the .xcsg format is part of xcsg rather than AngelCAD, and the xcsg README.md doesn't mention being able to write out .xcgs files. Most CAD systems allow you to make multiple changes to a design, I don't see that with this system.

STEP is not an entirely different domain.