@xazax
I just didn't want to be rude with the previous developers about the improper documentation and weird shorthanded variables, but Xazax you're right we need better documentation from now on.
Actually, I think it is pretty obvious what those files are for, at least it should be for those, who wants to apply for a dev position. However that is true, there is a room for improvement in the documentation of the code. So what we need there, is not a glossary, but proper documentation.
@KeiKun, true if you have some knowledge of C, java or C# you might find what each function does, but some commentaries aren't even translated (check the code for Japanese comments, they're still there since forever)
and I don't think it's fun for new people to search for every file just to know what a variable means or a function does, besides remember this is C, not a an OOP language where you can know directly which class you're using and where to search.
if you have knowledge with C language
its already easy to determine what that file is for~