Ключевые слова: address, aged, antique, background, bag, blank, business, communication, confidential, correspondence, cover, damaged, document, empty, envelop, envelope, environmental, file, grunge, information, isolated, letter, mail, manila, materials, message, object, office, open, package, packaging, packet, paper, paperwork, post, postal, receive, recycle, recycling, report, retro, secrecy, send, service, space, supply, torn, transport, used, white,