Carpet pages are wholly devoted to ornamentation with brilliant colors, active lines, and complex patterns of interlace. They are normally symmetrical, or very nearly so, about both a horizontal and vertical axis, though for example the page at right is only symmetrical about a vertical axis. Some art historians find their origin in similar Coptic decorative book pages, and they also clearly borrow from contemporary metalwork decoration. Oriental carpets, or other textiles, may themselves have been influences. The tooled leather book binding of the St Cuthbert Gospel represents a simple carpet page in another medium, and the few surviving treasure bindings - metalwork book covers or book shrines - from the same period, such as that on the Lindau Gospels, are also close parallels. Roman flo