Ключевые слова: advertising, announcement, black, blackboard, business, chalk, chalkboard, communication, concept, customer, customers, doodle, drawing, font, hand, icon, idea, innovation, market, marketing, media, message, note, online, plan, promotion, scribble, seo, sign, sketch, slate, slogan, social, strategy, symbol, target, text, word, write, writing, written,