Question: how to sl1 wyif in knitting?
Answer: If you are knitting: the working yarn is in the back as you knit each stitch. To sl1 wyif (slip 1 stitch with yarn in front) you need to move your working yarn to the front (i.e.: the side facing you) between the needles. Slip the next stitch purlwise from the LH to the RH needle.