Need help understanding pattern

I’m making a sweater from the Knitter’s Book of Sweater Patterns by Interweave. I’m stuck on an an increase. Please help!!!
“Work 42 sts in cable rib as shown on chart, place maker (pm), [B]p2, k2, pick up and knit 2 sts behind the 2 sts just woked (2 sts inc’d[/B]),…”

I don’t understand the part that’s bolded. This appears on page 59 of the book for those who have it at home.
I REALLY appreciate your help.:muah:

:oo: Anyone?