Question: Which language is most often used in taekwondo?
About the article "Taekwondo", section "Korean commands".

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In taekwondo, Korean language commands are often used.
Korean numerals may be used as prompts or commands, or for counting repetition exercises.
Often, students count in Korean during their class, and during tests they are usually asked what certain Korean words mean.
These words are fairly common amongst taekwondo schools, but accuracy of pronunciation can vary widely.
Two of the most popular systems of taekwondo are named solely after their respective organizations: the World Taekwondo Federation (WTF) and the International Taekwon-Do Federation (ITF).
The WTF was founded in 1973, with roots in the KTA.
The KTA Central Dojang opened in South Korea in 1972, and a few months later, the name was changed to Kukkiwon.
The following year, the WTF was formed.
The International Olympic Committee recognized the WTF and taekwondo sparring in 1980.
Although the terms "WTF" and "Kukkiwon" are often mistakenly used interchangeably, Kukkiwon is a completely different organization which trains and certifies instructors, and issues official "dan" and "poom" certificates worldwide.
Kukkiwon has its own unique physical building that contains the administrative offices of Kukkiwon (World Taekwondo Headquarters) in Seoul, South Korea and is the system of taekwondo.
In contrast, the WTF is a tournament committee, and is not technically a style or a system.
The ITF was founded in 1966 by Choi Hong Hi as a splinter group from the KTA.
After Choi's death in 2002, a number of succession disputes splintered the ITF into three different groups, all claiming to be the original.
These three bodies are all private organizations.
Two are located in Austria and one in Canada.
The unofficial training headquarters of the ITF is located at the Taekwondo Palace in Pyongyang, North Korea, and was founded in the mid-1990s.
There are many other private organizations, such as the World Traditional Taekwondo Union and American Taekwondo Association which promotes the Songahm style of taekwondo, and Rhee Taekwon-Do which teached the military style of taekwondo.
Events and competitions held by private organizations are mostly closed to other taekwondo students.
However, the WTF-sanctioned events allow any person, regardless of school affiliation or martial arts style, to compete in WTF events as long as he or she is a member of the WTF Member National Association in his or her nation, which allows anyone to join.
The major technical differences among these many organizations revolve around the patterns (called "hyeong" 형, "poomsae" 품새, or "teul" 틀), which are sets of prescribed formal sequences of movements that demonstrate mastery of posture, positioning, and technique; differences in the sparring rules for competition; and martial arts philosophy.
In addition to these private organizations, the original schools ("kwans") that formed the organization that would eventually become Kukkiwon continue to exist as independent fraternal membership organizations that support the WTF and Kukkiwon.
The official curriculum of the "kwans" is that of Kukkiwon.
The "kwans" also function as a channel for the issuing of Kukkiwon "dan" and "poom" certification (black belt ranks) for their members. 
Choi Hong Hi (9 November 1918 – 15 June 2002), also known as General Choi, was a South Korean army general and martial artist who is a controversial figure in the history of the Korean martial art of taekwondo.
Choi is regarded by many as the 'Founder of Taekwondo'—most often by International Taekwon-Do Federation (ITF) organizations.
Others, such as World Taekwondo Federation (WTF) organizations, portray Choi as either an unimportant or a dishonorable figure in taekwondo history, whether by omitting him from their versions of taekwondo history or through explicit statements. 
Sports Taekwondo Australia is the governing body for the sport of taekwondo in Australia. 
While the Japanese term is most well known in the English language, forms are by no means exclusive to Japan.
They have been recorded in China as early as the Tang dynasty, and are today referred to in Mandarin as "taolu".
South and Southeast Asian martial arts incorporate both preset and freestyle forms.
In silat these are referred to as "jurus" and "tari" respectively.
Malay folklore credits the introduction of forms to the Buddhist monk Bodhidharma.
In Korean martial arts such as taekwondo and tangsudo, the word "hyung" or "hyeong" is usually employed, though in some cases other words are used.
The International Taekwon-Do Federation uses the word "tul", while the World Taekwondo Federation uses the word "poomsae" or simply the English translations "pattern" or "form."
Taekwondo patterns have multiple variations including "Palgwe" and the more popular "Taeguk" forms used by the WTF.
Forms are included in certain taekwondo competitions and are a key element of gradings.
Other Asian martial arts refer to forms by various terms specific to their respective languages, such as the Burmese word "aka", the Vietnamese "quyen" and the Kashmiri "khawankay".
In the Historical European martial arts and their modern reconstructions, forms are referred to as plays, drills or flourishes.