Morse code thus determines the dot length. It is common to assume that a word is 5 characters long. There are two common typical words: "PARIS" and "CODEX". PARIS mimics a word rate that is typical of natural language words and reflects the benefits of Morse code's shorter code durations for common characters such as "e" and "t". CODEX offers a word rate that is typical of 5-letter code groups (sequences of random letters). Using the word PARIS as a standard, the number of dot units is 50 and a simple calculation shows that the dot length at 20 words per minute
Braille pattern dots-245 Braille pattern dots-245 The Braille pattern dots-245 ( ) is a 6-dot braille cell with the top right and both middle dots raised, or an 8-dot braille cell with the top right and both upper-middle dots raised. It is represented by the Unicode code point U+281a, and in Braille ASCII with J. In unified international braille, the braille pattern dots-245 is used to represent a voiced palatal affricate, fricative, or approximant, such as /dʑ/, /ʑ/ or /j/, and is otherwise assigned as needed. It is also used for the number 0. Related to Braille pattern dots-245 are Braille patterns 2457,