backstitch

right|thumb|250px|Detail of the Bayeux Tapestry showing text and outlines in stem stitch.

right|thumb|150px|Basic backstitch Backstitch or back stitch and its variants stem stitch, outline stitch and split stitch are a class of embroidery and sewing stitches in which individual stitches are made backward to the general direction of sewing. In embroidery, these stitches form lines and are most often used to outline shapes and to add fine detail to an embroidered picture. It is also used to embroider lettering. In hand sewing, it is a utility stitch which strongly and permanently attaches two pieces of fabric. The small stitches done back-and-forth makes the back stitch the strongest stitch among the basic stitches. Hence it can be used to sew strong seams by hand, without a sewing machine.