Morse code become commonly available until around 1920. Until 2003, the International Telecommunication Union mandated Morse code proficiency as part of the amateur radio licensing procedure worldwide. However, the World Radiocommunication Conference of 2003 made the Morse code requirement for amateur radio licensing optional. Many countries subsequently removed the Morse requirement from their licence requirements. Until 1991, a demonstration of the ability to send and receive Morse code at a minimum of five words per minute (wpm) was required to receive an amateur radio license for use in the United States from the Federal Communications Commission. Demonstration of this ability was still
Braille pattern dots-12 Braille pattern dots-12 The Braille pattern dots-12 ( ) is a 6-dot or 8-dot braille cell with the top two left dots raised. It is represented by the Unicode code point U+2803, and in Braille ASCII with "B". In unified international braille, the braille pattern dots-12 is used to represent a voiced bilabial plosive, ie /b/, and is otherwise assigned as needed. It is also used for the number 2. Related to Braille pattern dots-12 are Braille patterns 127, 128, and 1278, which are used in 8-dot braille systems, such as Gardner-Salinas and Luxembourgish Braille. In the Japanese kantenji braille,