Short rows work partial rows. Instead of working an entire row, a portion of the stitches in a row are worked. Multiple rows are worked to create shaping.
A short-row row is a pair of rows, as both the right side and wrong side are worked. I put both the right side and wrong side instruction into a single instructions, separated by s-w-s. Subsequent short rows will work to another point in the row, creating an angle or other shaping.
After all the short rows have been worked, typically the wraps created around the unworked stitches are picked up (PU wrap) from the right side of the fabric on the next row worked across all stitches. This makes nearly invisible shaping.
I use s-w-s to abbreviate the slip-wrap-slip technique I use (unless otherwise specified). See that abbreviation for how to execute it.
Slip next stitch on left needle to right needle purlwise, bring yarn between needle tips to front or back (opposite its starting position), slip stitch back to left needle. Turn work and bring yarn to position to work the next stitch. This wraps the stitch, which is not worked.
Slip first stitch to right needle, place 1 stitch on cable needle and hold in back, slip first stitch back to the left needle, SSK, return stitch from cable needle to the left needle then s-w-s, turn.
German Short Row Shaping Method
SR is the abbreviation for short rows. SR when used as a technique it represents a short row method sometimes called German short rows.
Work stitches in pattern as indicated by instructions, turn work. If needed, bring the yarn to the front of work between needles. Slip last worked stitch to the right needle. Pull up on yarn so stitch rolls over the top of the needle, bringing yarn into position to work the next stitch in pattern.
Continue back, again working in pattern. Work short rows as indicated. When approaching a stitch that has already been worked as a SR it will appear as two stitches. Work an SR-tog.
The SR-tog is worked when the stitch pulled up in the SR is encountered. The SR stitch should be worked as either k2tog or p2tog to stay in pattern. The SR-tog works the two legs of the SR stitch and closes the gap that would otherwise be created by the short row.