"P 1 row even"

Can anyone explain to me what “P 1 row even” might mean? I’m making a mitten and after having decreased in stockinette stitch I am on the knit side and it tells me to purl one row even and then to bind off, but I don’t quite understand why I’d be purling on a knit side and then binding off. Given, this will be sewn together, so maybe they think I will just sew that into the mitten? Thanks!

The P 1 row even means just that. Purl one row all the way across the piece. Perhaps the pattern wants you to do that above a stocking stitches to give a bit of strength and stability to that edge before you bind off - The purl row would control the stretchiness of the stocking stitch. Good luck and good knitting.

thank you!