Ключевые слова: abc, alphabet, background, black, character coding, code, coding, collection, communicate, competition, design, dot, dot language, dots words, education, encryption, encryption keys, graphic, historic, illustration, information, international, key, language, letter, line, linguistics, mark, message, morse, morse code, morse code font, morsecode, poster, print, punctuation, radio, retro, secret, sign, signal, strategy, symbol, system, technology, telecommunications, telegraph, telegraphy, use morse codes, word,