Uses: to anchor a thread at the beginning of a project. It is not the same as an away knot, as just the knot is snipped off and the end of the thread has been incorporated in to the back of the line of stitching as one proceeds.
Working from right to left, go down at 1, and up at 2, in the line of stitching. Begin stitching, going over the thread in the back. When the knot is reached, snip it off, that is the only waste of thread to this anchoring method.