Well, from my limited experience it is hard to tell and in the picture the afghan is draped in a way that is a bit deceiving but it is the only solution I can see and they do talk about blocking it lightly on completion which would make some sense I suppose. I guess I will just barge ahead with knitting three on the last stitch and see what I come out with. I'm not sure if I know how to do that but the only way to know is to try. Otherwise I will be back again.
and this marvelous website for coming to my rescue. I really appreciate your time.