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-124 Braille pattern dots-124 The Braille pattern dots-124 ( ) is a 6-dot braille cell with the two top dots and middle left dot raised, or an 8-dot braille cell with both top dots and the upper-middle left dot raised. It is represented by the Unicode code point U+280b, and in Braille ASCII with F. In unified international braille, the braille pattern dots-124 is used to represent unvoiced labial fricatives, such as /f/ and /ɸ/, and is otherwise assigned as needed. It is also used for the number 6. Related to Braille pattern dots-124 are Braille patterns 1247, 1248, and 12478,