It looks like they're telling you where in the cable pattern they want you to start. What I'd do is for smalllest size):
Row 1 - 20: K1, P1 ribbing
Row 21: *K9, P3* x 7, K9
Row 22 and all even rows: *P9, K3* x 7, P9
Row 23: Do Row 5 of cable pattern - *C6F, K3, P3* x 7, C6F, K3
Row 25: repeat Row 21 (cable pattern row 7)
Row 27: repeat Row 21 (cable pattern row 9) and increase 1 at each end
Row 29: Do Row 11 of cable pattern - *K3, C6B, P3* x 7, K3, C6B
Row 31: repeat Row 21 (cable pattern row 1)
Row 33: repeat Row 21 (cable pattern row 3)
Repeat rows 23 - 34, but do increases on rows 37, 47, 57, 67 until piece measures 11.5 inches.
Hope this helps!
If this doesn't make sense (or you're doing a different size) email back!
Happy Knitting :XX: :XX: