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'CVars' should not be confused with the game's script variables, called vars.

The term 'CVar' predates WoW and originated with id Software's game Quake (the lead programmer of vanilla WoW was John Cash, a former programmer at idSoftware), and is meant to differentiate base game script variables from commands. These variables affect many aspects of the game, including the graphics engine, sound system, and user interface. In the World of Warcraft game client you can access many of its configuration options through 'console variables' or 'CVars'.