Ключевые слова: abstract, backdrop, background, canvas, cell, checked, checkered, copybook, detail, diary, document, drawing, education, exercise, geometry, graph, grid, line, macro, material, mesh, message, net, note, notebook, notepad, office, page, paper, pattern, pen, regular, sample, sheet, simplicity, square, squared, stationery, striped, structure, study, supply, surface, texture, white, write,