What is 'invisible method'?
Hi everyone. I'm going to TRY a pattern for Garter/Rib slippers. The directions say: cast on 22 stitches. Use an invisible method if I want to graft the back-of-the-heel later instead of a simple seam. I usually knit my cast-on stitches. Question is what is an invisible method and what is a graft. I don't knit often but love to try something new. Appreciate any help.