The type of weaving most associated with Oriental rugs in which tufts of wool pile (or silk, etc.) are hand wrapped around one or more (usually two) warps to project at right angles to the plane of the weaving creating a plush textile. They are hand tied individually, one row at a time, and held in place by ground wefts. Also known as hand knotted pile. The process is to be distinguished from the making of inferior hooked rugs or tufted rugs in which tufts of wool are poked into pre-existing loosely woven fabric and held in place by glue or glued backings. Carpets produced with hand knotted pile are renowned not only for their beauty but also for their extreme durability and longevity. The process of hand knotting is the most intricate and labor intensive process used to make carpets today. And hand knotting produces the best quality carpets that are crafted to last for generations.