A simple example of using “CO” and “BO” within a stitch pattern.

Note that binding off 3 stitches actually uses up 4 stitches off your left needle, leaving one stitch on your right needle. That “extra” stitch is shown in the stitch map with an asterisk symbol. It’s why row 3 ends with “k4” rather than “k5.”

Shown with a cast-on count of 13 stitches.   Getting chart...

  • Rows 1 and 5 (RS): Knit.
  • Rows 2 and 6: Knit.
  • Row 3: K5, BO 3 sts, k4 (10 sts).
  • Row 4: K5, CO 3 sts, k5 (13 sts).