Referee signals are standardized gestures used by officials in sports to communicate decisions to players, coaches, and spectators. These signals help maintain clarity during a game, ensuring everyone understands the rules being enforced. For example, in basketball, a referee may raise one arm to indicate a foul, while in soccer, a referee might point to the corner flag to signal a corner kick. Each sport has its own set of signals, which are often taught during training for referees. Understanding these signals is crucial for players and fans alike, as they provide insight into the game's flow and the referee's decisions.