Ключевые слова: abstract, background, business, classroom, closeup, communicate, communication, concept, designer, development, diary, digital, double, e, education, electronic, email, envelop, error, exposure, financial, flow, freelance, icon, internet, mail, manager, marketing, message, multitasking, network, newsletter, notebook, notepad, online, pen, pencil, receive, research, school, send, social, spam, symbol, target, technology, trader, web, writes,