Ключевые слова: abstract, backdrop, background, blank, close, close up, copybook, design, diagonal lines, drawing, education, empty, engineer, exercise, exercise book, grid, learning, lesson, macro, math, mathematics, memo, new, note, notebook, office, page, paper, pattern, plan, record, school, schoolwork, scrapbook, sheet, space, square, squared, surface, technical, texture, university, white, worksheet, write,