What is RGL?

[WuZhuoran]

In a few docs such as path.md, it mentioned a term RGL.
It looks like the Ruby Graph Library or something.
Refer this: https://github.com/monora/rgl and https://r-forge.r-project.org/projects/rgl/

I think this is a library that is based on OpenGL and Bannerlord Engine used as one of the graph library. But I am not sure the exact the meaning for this.

[OzgurEraslan]

RGL is the name we use to refer our proprietary game engine.
Naming has nothing to do with Ruby Graph Library, OpenGL, or any other library.
Abbreviation do not need an expansion or explanation, as you should just call it RGL when necessary.