Morse code and interword gaps may be lengthened so the word rate is only 5 words per minute. Using different character and text speeds is, in fact, a common practice, and is used in the Farnsworth method of learning Morse code. Some methods of teaching Morse code use a dichotomic search table. Morse Code cannot be treated as a classical radioteletype (RTTY) signal when it comes to calculating a link margin or a link budget for the simple reason of it possessing variable length dots and dashes as well as variant timing between letters and words. For the purposes of Information Theory
Braille pattern dots-23 Braille pattern dots-23 The Braille pattern dots-23 ( ) is a 6-dot braille cell with the middle and bottom left dots raised, or an 8-dot braille cell with the two middle-left dots raised. It is represented by the Unicode code point U+2806, and in Braille ASCII with the number "2". In unified international braille, the braille pattern dots-23 is used to represent a voiced bilabial consonant, such as /b/ or /ɓ/ when multiple letters correspond to these values, and is otherwise assigned as punctuation or accent mark, as needed. Related to Braille pattern dots-23 are Braille patterns 237, 238, and