Ключевые слова: announcement, attach, background, black, blackboard, blank, board, box, business, chalk, chalkboard, communication, concept, document, empty, flow, frame, green, information, isolated, label, line, list, map, memo, message, model, note, notebook, notepaper, notice, office, pad, page, paper, pattern, post, remember, remind, reminder, school, sheet, space, spiral, sticker, sticky, texture, white, yellow,