Ключевые слова: accessibility, alphabet, background, blind, blindness, board, book, braille, communicate, communication, disability, disabled, document, dot, education, eye, finger, hand, hands, international, language, learn, learning, letter, lifestyle, literature, male, message, page, paper, people, read, reading, reads, school, see, sheet, sight, sign, student, studying, symbol, system, text, textured, touch, touching, vision, white, world,