so i downloaded a few nintendo 64 roms. now i have for example a archive called Donkey_Kong_64.7z, which contains all the different versions of the game (thanks to 7zip): what i know: (U) = USA (E) = Europe (J) = Japan [!] = Good tested Rom (?) [m4] = Multi 4 etc. but what are the other extensions for? like [b1], [b2], [f1], [f2], [o1], [h1C] and many others in 7zips of other games. is there like a wiki site which contains all the explanations?