Ключевые слова: abstract, background, bible, black, book, bookmark, bookstore, coat, collection, corporate, cover, design, digital, document, education, encyclopedia, icon, illustration, information, internet, isolated, knowledge, learning, lecture, lesson, library, literature, open, organisation, page, paper, pdf, pictogram, publication, publishing, read, school, science, set, sign, signs, silhouette, story, study, symbol, text, textbook, university, white,