This stitch is useful for filling small shapes. Bring the thread through at (A) and make a small Straight Stitch along the center line of the shape.
Bring the thread through again at (B) and make a sloping stitch across the center line at the base of first stitch.
Bring the thread through at (C) and make a similar sloping stitch to overlap the previous stitch. Continue working alternately on each side until the shape is filled.