Oh, I see it, I see it! I have never read that anywhere and have read about a dozen knitting books. Either I overlooked that little bit of info or it was assumed to be obvious. Thank you so much!
But, about those edges - do you mean to slip as if to purl or to slip as if to knit? What if you had a pattern that read K1, k2 tog, etc. - would you disregard the first K1 and slip it instead?