Onyx is a tool written in C# that greatly simplifies the work of GSC developers. It is essentially a very useful database that converts the unreadable function, method, and variable names found in decompiled GSC files from recent COD games (func_XXXX, method_XXXX, var_XXXX) into their original, clear, and understandable names, complete with additional information such as parameters for functions and methods.
Onyx currently supports the following titles:
S2 (World War II)
IW7 (Infinite Warfare)