Ключевые слова: archives, background, business, cellophane, classification, clear, copy, design, document, empty, file, filing, flat, grey, group, insert, keep, lay, many, nobody, object, office, organization, organize, perforated, plastic, pocket, pockets, polyethylene, protection, protector, protectors, punched, safe, save, sleeve, space, stationery, system, table, text, top, translucent, transparent, view, wallet, work,