Ключевые слова: abstract, advertisement, advertising, and, backdrop, background, billboard, black, blackboard, blank, class, classroom, close, closeup, communication, concept, copy, copyspace, design, dirty, draw, drawing, education, element, empty, frame, grunge, grungy, horizontal, learning, lesson, message, nobody, note, photo, school, sign, space, surface, symbol, teach, text, texture, textured, up, used, vignette, wall, white, write,