Modern Korean martial arts' systemization and presentation are very similar to their Japanese counterparts (i.e., barefoot, with uniforms, classes executing techniques simultaneously by following the teacher's commands, and sometimes, showing respect by bowing to a portrait of the founder and/or to national flags). Many modern Korean martial arts also make use of colored belts to denote rank, tests to increase in rank, and the use of Korean titles when denoting the teacher denoting Japanese colonial influence. These include: Kyosanim: teacher. Sabomnim (사범님 / 師範님): Master instructor in some styles/systems but not all, e.g., taekwondo and hapkido. Kwanjangnim (관장님 / 館長님): training hall owner/ kwan leader or master instructor in many, e.g., taekwondo and hapkido. Dojunim (도주님 / 道主님): keeper of the way. It is, typically, used to imply a founder of a style or system as in Ji Han-Jae Dojunim of S(h)in Moo Hapkido. NOTE: remove the word "nim" for the actual titles as "nim" is an honorific meaning "sir" or its equivalent. These Korean terms are based on Confucian rank systems (with the same Chinese characters). Many schools also make use of Korean terminology and numbers during practice, even if located outside [South] Korea. Terminology Korean martial arts are usually practiced in a dojang (도장), which may also be referred to as cheyukkwan (체육관 / 體育館, i.e., gymnasium). The practitioners wear a uniform or tobok (도복) with a belt or tti (띠) wrapped around it. This belt usually shows which grade the practitioner has attained. A student usually starts with a white belt and moves through a range of coloured belts (which differ from style to style) before reaching the black belt. The grades before black belt are referred to as geup or kup (급), while the black belt ranks are referred to as dan (단). In some cases, students younger than 16 years of age are not given dan grades, but rather "pum" or poom (품) or "junior black belt" grades. Some styles use stripes on the black belt to show which dan the practitioner holds. It is common for a system to have nine geup grades and nine dan grades. While it might only take a few months to go from one geup to the next, it can take years to go from one dan to the next. Most of the above terms are identical to those used in Japanese styles such as judo and karate, but