m_forward
This variable controls how fast the player should move forward and back when the mouse is moved forward and back. This command has no effect if the +mlook command is in effect because when the mouse is moved forward and back the player looks up and down instead of moving forward and back. Some players might want to set this variable to "0" if they happen not to use +mlook constantly and they only want to use the mouse to turn the player. Setting this variable to "0" will prevent the inadvertent movement of the player forward and back while trying to make precise turns with the mouse.