Ключевые слова: adhesive, announcement, backgrounds, billboard, blackboard, blank, board, bulletin, business, classroom, clipboard, communication, concepts, copy, cork, drawing, equipment, frame, green, hanging, horizontal, ideas, information, instant, label, list, medium, message, note, office, on, out, pad, paper, pin, plan, plank, print, remind, reminder, sign, space, stick, straight, table, template, thumbtack, wisdom, wood, yellow,