Dan (rank) highest level that might be attained, with instructor certification and judge/judgment authorization being understood as higher-level or more sophisticated. Many arts use between one and ten dan ranks: In some martial arts, black belts are worn for all "dan" grades. In others, the highest grade (10th "dan") wears a red colored belt. In Jūdo and Shotokan 6th to 8th "dan" may wear a red and white-patterned belt and 9th to 10th "dan" may wear a solid red belt. There is some variation even within styles. Generally, belts do not have markings that indicate the actual "dan" grade. Okinawan styles used
Judo in Canada Judo Championships. Canada's greatest success in international competition, however, has been at the Pan American Games, with a total of 76 medals ranging from gold to bronze awarded since 1967 (see '' for lists of the results). Judo is also practised by visually impaired athletes, and became a Paralympic sport in 1988 for men and 2004 for women. While often referred to as 'blind judo', it includes athletes with three different levels of visual impairment, all of whom may compete against one another so long as they are in the same weight category. The only differences between Olympic and Paralympic