As in the Olympic and Paralympic Games, competitors measure their skills in Freestyle, Backstroke, Butterfly, Breaststroke and Medley events. Athletes are classified based on their functional ability to perform each stroke. Swimming is governed by Swim Ontario, which incorporates the rules of the International Swimming Federation (FINA). A FINA standard eight-lane 50m pool is required for competition at the Ontario ParaSport® Winter Games. Events are conducted as heats for eight competitors per class and with the fastest eight swimmers per class competing in the finals. There are various forms for swimmers to start their race; in the water, a dive start sitting on the starting platform or the typical standing start. During a Swimming event, swimmers who are blind are required to have an assistant to help him/her as he or she approaches the swimming pool end wall, either to make a turn or for the finish of the race. This process is called tapping and performed by a “tapper.” These swimmers are also required to wear blackened goggles in all their events.