Ключевые слова: abstract, background, barrier, border, cage, chain, chained, chainlink, design, detain, element, enclose, enclosure, fence, field, framework, graphic, grass, green, grid, industrial, industry, iron, isolated, jail, link, linkage, mesh, metal, metallic, net, outdoor, pattern, perimeter, prison, protection, safety, security, shape, steel, technology, texture, textured, wall, wallpaper, white, wire, wired,