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-356 Braille pattern dots-356 The Braille pattern dots-356 ( ) is a 6-dot braille cell with the middle right and both bottom dots raised, or an 8-dot braille cell with the upper-middle right and both lower-middle dots raised. It is represented by the Unicode code point U+2834, and in Braille ASCII with the number 0. In unified international braille, the braille pattern dots-356 is used to represent various punctuation, often coupled with Braille pattern dots-236 as an closing mark. † Abolished in Unified English Braille Related to Braille pattern dots-356 are Braille patterns 3567, 3568, and 35678, which are used in