Also known as out of play, it is the area of a soccer pitch outside the area formed by the sidelines and end lines. If the ball crosses these boundary lines, the ball is declared dead by officials and must be put back into play via a corner kick or throw in. The lines themselves and the field of play are inbounds. If the ball crosses the touchline or endline, out of the field of play, play is stopped (though the clock continues to run). If across the touchline, the ball must be put back into play by a throw-in, executed by the opponent of the team who touched the ball last.