Ключевые слова: abstract, agreement, answer, background, blue, business, button, choice, choosing, communication, computer, concepts, contract, cursor, decisions, digital, down, electronic, emotion, expressing, finger, gesture, gesturing, gray, hand, icon, idea, internet, key, keyboard, keypad, laptop, notebook, ok, problem, query, question, sign, solution, status, success, symbol, technology, thumb, up, vote, voting, yes,