Ключевые слова: alert, allowed, attention, background, ban, banner, business, button, call, caution, cell, cellphone, cellular, communication, compulsory, design, do, forbid, forbidden, icon, illustration, isolated, mobile, no, phone, placard, prohibited, prohibition, red, refrain, regulation, restricted, restriction, rule, sign, signboard, stop, symbol, telephone, telephony, use, warn, warning, white,