Ключевые слова: background, blank, blue, business, cellophane, classification, clear, color, copy, design, document, empty, file, filing, insert, keep, light, mockup, nobody, object, office, organization, organize, paper, perforated, plastic, pocket, polyethylene, protection, protector, punched, safe, save, sheet, sleeve, space, stationery, system, text, top, translucent, transparent, view, wallet, work,