Working into the Back Loop
Standard abbreviation: BL
BLO - Back loop only
tbl - Through back loop
A method that can be used with any type of stitch. Instead of working under both bars of the stitch of the row below as usual, the stitches are worked into the back bar only, leaving the front bar unworked.
This creates a less stable, more flexible fabric and when working in rows, differs from working in the front loop by leaving a slightly larger ridge (the unworked stitches) on the front of the work.