Ключевые слова: abstract, backdrop, background, black, bone, creative, cricket, cross, decorative, design, floor, floor grill, geometric, geometry, grid, iron, iron and steel industry, kind, line, linear, lines, material, metal, metal engineering, metal processing, metallic, metalworking, pattern, perspective, quadratic, simple, solid, square, steel, steel grid, straight, structure, surface, texture, wallpaper, white,