How To Write A Letter In Braille . In braille’s system, each letter consists of six dot positions arranged in two columns with three dots each. To learn more about braille visit this wikipedia article. Braille Experiment Anthony Day Grandin from illumination522715345.wordpress.com Sequences of two or more capital letters are preceded with the dot 6, 6 capitals word indicator and terminated by either a space or the dot 6, 3 capitals terminator. To learn more about braille visit this wikipedia article. It was devised by louis braille in 1821 and consists of raised dots.