Ключевые слова: advertising, advice, advise, aged, attention, background, black, blackboard, blank, board, business, chalk, chalkboard, class, classroom, close, communication, concept, consultation, copy, dash, dirty, draw, drawing, empty, grunge, hand, handwriting, highlight, highlighting, hold, holding, line, male, message, person, presentation, school, seminar, slate, solution, space, straight, teacher, text, texture, training, underline, underlining, up, used, vintage, white, write, writing,