In binding and finishing, a means of binding pages together by driving staples though the centerfold of a signature or group of signatures. Saddle-stitching, along with side-stitching, are collectively known as wire stitching. Side-stitching is rarely used any longer. Many magazines and newsletters are bound by saddle-stitching—such as Time, Newsweek, Natural History, and many others. Although perfect binding has replaced much saddle-stitching, the latter is still the most effective method for binding materials that are up to X inch thick.