Ключевые слова: accessibility, alphabet, background, blind, blindness, board, book, braille, characters, communicate, communication, disability, disabled, document, dot, education, eye, finger, hands, international, language, learn, learning, letter, literature, message, page, paper, people, printing, read, reading, reads, school, sheet, sight, sign, slate and stylus, student, symbol, text, texture, textured, tools, touch, touching, vision, white, world, writing,