I'm making a sweater for the first time and I want to just clarify a few things for the sweater, so that it turns out perfectly.
The pattern states that I have to use an edge-to-edge stitch for the ribs and a back stitch for everything else. I know how to do the back stitch, but I'm not sure what the edge-to-edge is.
Second question is in relation to the sleeves. Here's what the pattern says:
Set-in sleeves: Set in sleeve easing sleeve head into arm hole using back stitch,
Square set-in sleeve: Set in sleeve head into armhole, the straight sides at top of sleeve to form a neat right-angle to cast off sts at armhole on back and front using back stitch.
Shallow set-in sleeves: Join cast-off sts at beg of armhole shaping to cast –off sts at start of sleeve-head shaping. Sew sleeve-head into armhole, easing in shapings."
What does it mean to "set in" the sleeves? What is the difference between a square and shallow set in?