Buttonhole Bars. Used in lace, embroidery and drawn-thread work. To work, pass two or three threads from side to side and work the stitches over the threads.
(a) For single stitch bars work stitches one way only.
(b) For double stitch work up one side, but not very closely ; turn at the end, and work down the other side, putting one stitch between each two taken previously.
(c) For groups of bars, work three or four bars close together, with spaces between the groups.