The project is a community-driven initiative that extends the original game's capabilities. It essentially upgrades CoD4 to version 1.8 (and beyond), fixing critical security exploits and bugs that the original developer, Infinity Ward, left behind.
Extended commands and CVARs
To stay compatible with the majority of the competitive and modded community, ensure your game folder is updated to the latest CoD4x build. cod4x patch v2ff is different from server free