A short row is just that--you're only knitting part of the row.
When move your yarn forward and slip the stitch, and then turn your work, you'll need to put the yarn in the front to purl. This will automatically wrap your stitch. If you follow the directions exactly, it'll all become clear.
is video on short rows with wrap so you can see how they work.
Slip as if to purl
The only thing that concerns me about your pattern is the end with RS row
part. Is your RS row a knit row? I only ask because usually in st st the knit is the right side. If your RS is a knit, then the directions are mistakenly having you knit the next row, as well. If you're working in reverse st st, this is right. If you're working in regular st st, then you should end with a purl row.