Ключевые слова: against, analysis, analyze, background, bad, balance, black, blackboard, board, business, chalk, chalkboard, choice, class, column, comparison, con, concept, decision, drawing, education, empty, frame, good, handwriting, idea, inspiration, line, list, menu, message, motivation, note, noticeboard, positive, pro, problems, school, space, strategy, success, survey, text, white, write,