Technical officials such as referees and table officials help control basketball games by enforcing rules and tracking stats. Referees make calls during games for violations, fouls, and misconduct. Table officials record lineups, scores, possessions, timeouts, and player stats. They also track time. Violations occur when players break rules and result in the opposing team gaining possession, while fouls are illegal actions by one team against another and result in free throws. Technical officials use hand signals to indicate scores, stops in play, timeouts, and substitutions.