Ключевые слова: background, blank, book, close, data, discovery, document, education, glass, group, image, information, lens, letter, library, literature, looking, loupe, magnifier, magnifying, media, nobody, note, object, office, old, page, paper, print, reading, research, school, sign, single, space, stack, text, textbook, texture, tool, up, view, wisdom, work,