Ключевые слова: abstract, art, backdrop, background, backgrounds, blurred, book, brochure, color, composition, concepts, creativity, curve, decoration, design, document, education, elegance, elegant, element, empty, heap, image, information, intelligence, knowledge, library, light, line, literature, macro, magazine, nobody, old, open, page, paper, part, pattern, power, print, publish, row, science, sheet, space, stack, symbol, text, textbook,