S-13.1, r. 1 - By-law respecting bingo

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8. Unless the rules of the game available to the public in participating halls provide otherwise, the player must mark on each card of his ticket the selected alphanumbers that appear on it and he must, once he notices that he has a winning card, declare it outloud, otherwise he is not entitled to the prize.
O.C. 1271-97, s. 8.