Hanging trail of fabric, either shaped and stiffened or falling fluidly from the end of swags. tape A strip of fabric used in the construction of curtains. Decorator tape is used in making some headings, while hook-and-loop tape is used to attach a cornice or valance to a valance shelf. Twill tape, or web, is sometimes used to reinforce a handmade heading. tape-gathered heading A curtain heading framed by a narrow, threaded tape sewn on at the top of a curtain. When the parallel threads are pulled up, a gathered effect is created.