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 where he was Canada's only competitor. Justin Karn, Tim Rees, and Tony Walby represented Canada in the 2012 Paralympics. Tom Thompson, head instructor at the Brantford Judo Club, has coached the national Judo team for the past four Paralympics. A video of Morgan explaining Paralympic Judo is available in the 'External links' section below. Judo is also practised by people with disabilities other than visual impairment, such as the members of the Jita Kyoei Judo Club at the Community Head Injury Resource Services in Toronto, who all have Acquired Brain Injury. Judo in such circumstances, however, is rare, non-competitive, and