Ключевые слова: backdrop, background, blueprint, business, color, concept, cover, design, detail, draft, draw, element, engineering, frame, graphic, green, heat, heater, heating, heatsink, house, hvac, idea, illustration, industry, line, model, modern, page, paper, part, pattern, pipe, plan, plastic, print, project, radiator, room, shape, silhouette, sketch, solution, style, success, symbol, system, technical, view, wallpaper, white,