Ключевые слова: 24, 3d, adjusting, answer, art, assistance, business, call, center, check, checklist, communication, concept, connection, contour, customer, day, exclamation, faq, fixing, help, hotline, hour, icon, illustration, isolated, isometric, line, linear, lineart, list, maintenance, mark, operator, outline, phone, pink, question, repair, service, set, setting, sign, square, symbol, telephone,