 A section of draped fabric at the top of the window that typically resembles a sideways “C” shape (swag) sometimes coupled with a vertical “tail” which hangs on either side of the swag.There are many kinds of swag top treatments, but the prevalent styles are the basic pole swag or the bias swag which can be hung in a variety of ways, including from a cornice box or a pole attached directly to the inside of a window frame.A treatment ranging from simple to elaborate, the valance is a piece of decorative fabric usually hung from a rod, a piece of decorative hardware or a board.