Anyway, one of my new patterns, Sugar Bunn, calls for the working of a vertical double decrease with a twisted stitch.
Here is a photo tutorial explaining how this is done.
Figure 1: The stitches are labeled A, B and C. B is the top stitch in the row of twisted stitches.
Figure 2: Slip A onto cable needle as if to purl and hold in back.
Figure 3: Slip B from left needle to right needle as if to purl
Figure 4: Place A from the cable needle onto the right hand needle.
Figure 5: Knit C.
Figure 6: Pass A and B over the stitch just knit.
Figure 7: Done, three stitches decreased into one with the center stitch twisted.