Penalty box allows for fans to see that the next player responsible for a penalty will be sent to the sin bin indefinitely (if there has not been a sufficient change in attitude from the team). For the most serious offences and/or repeated misconduct, the referee may send off players, who take no further part in the game and leave their team a player short. Referees also have the power to send team officials to the stands. In 1981 Australia's New South Wales Rugby Football League introduced the use of the sin bin and that year Newtown Jets hooker Barry Jensen became
Penalty (ice hockey) and subsequently cleared by the NHL). However, this penalty is still in effect in Canadian hockey. "A Gross Misconduct penalty shall be assessed [to] any player or team official who conducts herself in such a manner as to make a travesty of the game." The referees make most penalty calls. Linesmen generally may call only certain obvious technical infractions such as "too many players on the ice". The official will initially put an arm in the air to signal a penalty; the official will stop play only once the offending team has control of the puck, or play is stopped