Ключевые слова: abstract, background, blank, blue, blueprint, business, color, concept, design, document, education, element, empty, geometric, geometry, graph, graphic, grid, illustration, isolated, letter, line, list, mathematics, message, note, notebook, notepad, office, old, page, paper, pattern, retro, school, science, seamless, sheet, square, squared, stationary, study, technical, technology, text, texture, wallpaper, white, write,