Just a quick extra note about cartridge-belt rib, a wonderful stitch pattern by Barbara Walker from her second treasury…
I’m working up a pair of socks for my girl in this pattern, and to get this pattern in the round, the stitch pattern is:
Row 1: K1, *sl1 wyif, K3, rep from *
Row 2: P3, *sl1 wyib, P3, rep from *
Will show off the socks when they start to look like something!