Bight (knot) be used in situations where the ends of the rope are inaccessible, such as forming a fixed loop in the middle of a long climbing rope. Many knots normally tied with an end also have a form which is tied in the bight (for example, the bowline and the bowline on a bight). In other cases, a knot being tied in the bight is a matter of the method of tying rather than a difference in the completed form of the knot. For example, the clove hitch can be made "in the bight" if it is being slipped over the
Stopper knot or passing back through a hole, block, or belay/rappel device. It then functions like a leash handle. Knots commonly used for this purpose are: The Chinese button knot and the Celtic button knot are decorative stopper knots. When a stopper knot is tied outside another knot and around the standing part it can also be called a backup knot. Tying the end around the standing part helps prevent the knot from unraveling by not allowing the end to slide back into the knot: a kind of insurance against failure of the knot. Examples of this usage are often seen in