Some of the common knitting abbreviations have to do with the stitches, or "sts." For instance "K" or "k" means to knit, while a capital or lower case "p" indicates a pearl stitch. "SS" or "sl st" stands for a slip stitch, and "pop" is a popcorn stitch.
Sometimes knitters must alternate, or "alt," stitches. To start projects, knitters often need to "CO," or cast on. They finish by binding off, or "BO."
Other abbreviations tells the knitter what to do with stitches. For instance, "inc" means to add stitches, while "dec" indicates to decrease the number of stitches. "Rep" is for repeating stitches, and "sk" is for skipping stitches. "Skp" is a combination of slipping one stitch, knitting one and then passing the slip stitch over the knitted stitch. This decreases the row by one stitch.
Abbreviations sometimes pertain to the project itself. For example, "WS" indicates the wrong side, and "RS" is the right side. In some cases, knitters need a place marker, or "pm," to identify a certain section.
Materials are also abbreviated. Double pointed needles are shown by "dpn." Measurements are often done in grams ("g"), yards ("yds") ounces ("oz"), millimeters ("mm") or meters ("m"). Yarn colors are sometimes indicated as "CC," or contrasting color, or as color A ("CA") or color B ("CB").