Ключевые слова: b, background, blackboard, blank, board, box, business, c, chalk, chalkboard, checklist, cross, d, document, education, form, label, learn, lesson, list, meeting, memo, menu, message, note, notepad, option, paper, pattern, plan, project, remind, reminder, report, sign, solution, space, study, success, symbol, tasks, teach, test, text, tick, underscore, vote, white, work, write,