the goal, is the team area. Beyond that is each team's landing zone. The middle two sections are collectively referred to as the neutral zone. The lines of the court are made by placing tape over lengths of twine. This makes the line both visual (for officials) and tactile (for players). The team area and landing zone, including the boundary, goal lines and high-ball lines, are always marked in this way. Furthermore, the team area has six hash marks (three at the front, one on either side, and one on the goal line) to assist with player orientation. The ball weighs and has eight holes and contains several noise bells. The ball's diameter is around . A non-official ball of about has also been produced by several companies for use by younger players. At Paralympic level, the ball has been measured leaving the hand in excess of . Despite this, through training and some padding, there are very few injuries. Officials For competitive games, the following set of officials are on the court: referees (2) — Each referee remains along the sideline at one half of the court. One referee is 'table-side', the other 'off-table side'. goal judges (4) — Positioned to the side of each goal edge, the goal judge raises their hand to confirm to the referee when a ball crosses the goal line. Goal judges are also crucial to the game's speed since they retrieve a ball going off court and drop it at the side hash mark of the team area so play can resume. ten-second timers (2) — Keep track of the time between when a defending player contacts the ball and when the ball is thrown, calling '10 second' penalties when applicable. The role was expanded in the 2018 rule changes to include watching for eyeshade and illegal coaching penalties. scorer — This technical official keeps track of the number of time-outs and substitutions taken by a team and, as the term suggests, keeps score. game timer and back-up timer — Usually, as with a basketball scoreboard, the period's time counts down to zero. It is stopped and started by the referee's whistle. A back-up timer is used in case of power failure to the venue. Players Each team has three players on the court at a time, with one to three substitute players on the bench. At an international level, including the Paralympic