Abby, that helped. I have never heard of making a buttonhole by doing K2tog twice, but I guess it would work.
sassybunny, a little more clarification on how to make a buttonhole that way.... You know how you often make a buttonhole by binding off 2 stitches and then on the next row you cast them back on? Well, this is the same idea, but to get rid of the 2 stitches, instead of binding off they just k2tog 2 times, then on the next row right between, or centered over the middle of the two k2togs you cast the 2 stitches back on.
So now I see how they might be intending to make a buttonhole, but nothing else is any clearer.