Slipped stitches!

Hello,
I’m working on my very first pattern… a sleeveless sweater for my mom. This means I am still trying to decifer all of the little abbreviations and instructions for it… I’m working on the ribbing right now, and I need to ‘sl last st purlwise’ on the wrong side… and ‘sl last st knitwise’ on the right side.
What is the difference between the two, or is it just named different for being on the WS or RS???

Thanks!!
Carla.

p.s… someone should come up with a knitting dictionary… it would be so handy!!

Slipping knitwise means you put the right-hand needle through the loop as IF you are going to knit it (from the left side of the front of the loop).

Slipping purlwise means you put the right-hand needle through the loop as IF you are going to purl it (from the right side of the front of the loop).

So there is a difference!