Here’s the scoop:
Assume a needle is pointing right. The stitches sit on it with one leg in front and one in back. One of those legs is closer to the tip of the needle than the other. That’s the leading leg. The other leg is the trailing leg.
When the front leg is the leading leg, you knit by entering the stitch from the left of the leading leg, passing behind it. You purl by entering the stitch from the right of the leading leg, passing behind it.
When the rear leg is the leading leg, you knit by entering the stitch from the right of the leading leg, passing in front of it. You purl by entering the stitch from the left of the leading leg, passing in front of it.
In either case wrapping the yarn clockwise will result in the stitch having the leading leg in the rear on the next pass. Counterclockwise wraps result in the leading leg ending up in front.
Combination knitting wraps the knits counterclockwise and the purls clockwise. Therefore, previously purled stitches have their leading legs in back, and are properly knit as described above for rear-leading-legs.
To twist a stitch you simply reverse the above instructions. That is, to twist a stitch that has a front leading leg, follow the instructions for the rear leg, and vice versa.
[size=2][color=blue]The Mod Squad was here[/color][/size]