St stitch while knitting in the round

I’m making the newsboy cap from SNB Nation. The pattern says to knit in St. st for one round. So, my question is: While knitting in the round, is stockinette stich a “k1, p1” or do I just knit the entire round?
I guess I don’t understand how you can do a St. st while knitting in the round.

stockinette in the round is nothing but knit. if you want garter you would have to do knit one round and purl one round.

That’s what I thought. I wonder why they don’t just say to “knit” that round.