A Washout is used to increase the movement area “virtually” to the pilot of a flight game. This plugin is normally used for flight simulators. If a G force is simulated the simulator will move to one direction. If the plane will fly in a endless curve the force will never stop and all other forces are not possible to be simulated correct because the simulator hangs in one direction. So you can insert a washout to slowly move back to the middle position. The washout will move back in a user specified time period. There are different washouts for different usage included.