Maybe you were looking for one of these abbreviations: RCMX-RCN-RCNC-RCNN-RCNO-RCO-AK-RCO-NE-RCoA-RCOCI-RCOE.
Measure the width of your quilt and add 4-6 (or chosen excess). Design a backing to equal that width, adding 1/2 to each panel for each seam you'll use to sew it to a neighboring panel. Cut panels to the length of your quilt plus 4-6 (or chosen excess). Sew panels together with a 1/2 seam allowance. Press seams open to reduce bulk. Press backing before use.
1 Bend the backing into the comforter. 2  Align the edges of the fabric and backing with the sewn edges on the comforter. 3  The bias tape should be in between the fabric and backing. 4  Use straight pins to hold the materials together. 5  Use a sewing machine to sew the hole together.