Ключевые слова: abstract, background, banner, book, books, business, computer, concept, design, desktop, digital, document, e, ebook, education, elearning, electronic, flat, graphic, icon, illustration, information, internet, knowledge, learning, libraries, library, literature, media, network, object, online, pc, read, reader, school, screen, shelf, study, technology, traditional, training, university, vector, web,