Ключевые слова: accessibility, alphabet, background, blind, blindness, book, braille, closeup, communicate, communication, disability, disabled, education, finger, hand, handicapped, health, illness, impairment, international, invalid, language, letter, literature, page, paper, people, person, point, read, relief, school, script, senses, service, sheet, sick, sight, sign, student, symbol, system, text, textured, touch, visual, world, written,