Editing Instant replay (section)

=== Fencing ===
Video refereeing is compulsory at World Championships, Grand Prix competitions, and the Olympic Games and is used when the referee cannot decide if a touch is to be awarded at the request of a player (although only two incorrect video appeals are allowed per player in individual competitions) or if the score is tied in the last point and both lights turn on. An assistant official, a "video referee," watches the live match and helps the referee decide through a slow-motion replay on a monitor close to the [[Piste (fencing)|piste]]. It is used to determine the right of way in [[Foil (fencing)|foil]] and [[sabre]]. A player must gesture as a rectangle (monitor) to the referee to appeal. In individual matches, if the player has appealed twice incorrectly, they can no longer appeal again.