Would it be the slipped stitch edge?
It's uses 3 stitches on either side;
Right side row: k1, sl1 with yarn in front, k1
Wrong side row: sl1 with yarn in front, k1, sl1 with yarn in front
Becka used it on her Touch of Whimsy scarf
, that might have clearer instructions, just look at the first and last 3 stitches on the first few rows and you'll get the idea.
I knitted this scarf and also a bracelet using this edge and I really liked the effect.