Ключевые слова: background, backup, book, business, closeup, compact, computer, content, copy, copyright, culture, data, digital, disc, dvd, education, glass, grey, high density, information, knowledge, learning, library, loupe, magnifier, magnifying, modern, old, open, optical, page, paper, pile, protected, protection, read, recordable, reliable, schooling, storage, store, stored, technology, text, textbook, writing,