From Master Dan
After 16 years of being in a remote culture that not all speak english That is how they referred to me and it is like a celebrity handle most people in this region know me. More habit than anything. I starte with Ernie Reyes Senior and his master in San Jose Dan Q Choi in Moo Duk Kwan then changed to Jidokwan in 1974 with a Grand Master that was the most senior 9th degree in all Nth and Sth American continent he was inducted in to the World Martial Arts Hall of Fame in the 80's.
RANK TERMINOLOGY According to WTF and Kukkiwon
3rd Dan Junior Master
4th and 5th Dan Master
6th and 7th Dan Senior Master
8th and 9th Dan Grand Master
Note: There didn't used to be many non Korean master's and I always knew they truly would never let us equal recognition with them. A new term that is being used is Supreme Grand Master? so far this is being awarded after death and another I am hearing is Seniro Grand Master.
Hope this helps