Ключевые слова: abstract, air, backdrop, background, barrier, blue, border, cage, cells, chain, closeup, construction, day, design, fence, field, freedom, grid, grunge, horizontal, industry, iron, limitation, line, link, linkage, material, mesh, metal, metallic, minimal, net, netting, nobody, outdoor, pattern, prison, protection, rabitz, safety, security, shape, sky, steel, surface, texture, textured, wall, web, wire,