Ключевые слова: abc, advertising, background, billboard, black, blackboard, blank, board, business, chalk, chalkboard, class, close, college, communication, concept, contact, copy, design, direction, drawing, educate, education, empty, frame, grunge, handwriting, illustration, learn, mail, menu, message, note, phone, school, scratch, sign, space, straight, student, symbol, teach, text, texture, up, vintage, white, work, write,