Morse code is 60 milliseconds. Using the word CODEX with 60 dot units, the dot length at 20 words per minute is 50 milliseconds. Because Morse code is usually sent by hand, it is unlikely that an operator could be that precise with the dot length, and the individual characteristics and preferences of the operators usually override the standards. For commercial radiotelegraph licenses in the United States, the Federal Communications Commission specifies tests for Morse code proficiency in words per minute and in code groups per minute. The Commission specifies that a word is 5 characters long. The Commission specifies Morse code
Braille pattern dots-236 Braille pattern dots-236 The Braille pattern dots-236 ( ) is a 6-dot braille cell with the middle left and both bottom dots raised, or an 8-dot braille cell with the upper-middle left and both lower-middle dots raised. It is represented by the Unicode code point U+2826, and in Braille ASCII with the number 8. In unified international braille, the braille pattern dots-236 is used to represent various punctuation, often coupled with Braille pattern dots-356 as an opening mark. Related to Braille pattern dots-236 are Braille patterns 2367, 2368, and 23678, which are used in 8-dot braille systems, such as Gardner-Salinas