: Applying a thin strip of fusible interfacing to the seam allowance prevents stretching and distortion during sewing.
: A technique for neat zipper ends where you bend the coil at a 90° angle to create a clean, 45° fold on the underside before stitching.
The "File: Out.of.Line.zip" phrase typically refers to a by designer and quilter Gemma Sevenich (from the blog Pretty Bobbins ).