salmonmac - just found this on the site you showed me:
Is there an amendment to pattern BER156-11?
Cont straight in patt as established until back measures 1 ¾ in [4.5 cm] from cast on edge [end of Row 20].
Next row: k2, k2tog, work to end.
Rep this dec row on every 4 (4-6-6) rows 11 (14-6-14) times, then on every 2 (0-4-0) rows 3 (0-8-0) times. 42 (45-48-51) sts rem.
Cont straight until left back measures 7 ¼ …….
I'm assuming it means just to leave it out?