Ключевые слова: abstract, address, air, background, bank, blank, business, communication, concept, correspondence, data, design, digital, email, empty, envelope, express, finance, fly, global, home, information, internet, isolated, letter, mail, message, network, news, office, one, open, package, page, paper, post, postage, postal, postcard, receive, send, service, technology, web, write,