Page 23: Under techniques, alternate definitions were provided for C4f and C4b. They should read like this:

c4b: place 4 stitches on cable needle, hold in back, knit 4, knit 4 from cn, knit 4 (12 sts worked)
c4f: knit 4, place 4 stitches on cable needle hold in front, knit 4, knit 4 from cn. (12 sts worked)