Also known as trellis, diaper, and network. These names are applied to any design which is repeated in such a way as to form a lattice arrangement. It is more or less common in all classes of rugs, especially the Persians. A peculiar compact lattice pattern known as the “mirror design” is frequently found in the Hamadans.
G. Griffin Lewis The Practical Book of Oriental Rugs (Philadelphia: J. B. Lippincott Company, 1913) 117