Ключевые слова: abstract, art, backdrop, background, barbed, barrier, black, border, braided, chain, chained, cross, design, detail, detain, diagonal, element, enclosure, fence, field, graphic, grass, green, grid, industrial, industry, iron, link, linkage, mesh, net, pattern, prison, protection, security, steel, system, technology, texture, wall, wallpaper, wire, wired,