PSSO means to Pass Slipped Stitch Over. When you do this, you usually have slipped a stitch, worked the next stitch, and then you lift the slipped stitch up and over the tip of the needle.
Look at the videos under Decreases and you can see a demonstration.
If you want to rip out more than one row, you can pull the stitches out to one row before where you want to restart, and then pull out one stitch at a time and reinsert your needle.
To unknit a row, check out the video on Fixing Mistakes.
"Trust the pattern!"
Time flies like an arrow, but fruit flies like a banana.
Hop aboard while we follow the cloud-covered van of knitting harmony, man!! Woooo!! --Hedgehog
A question I spotted in the Buy/Sell/Swap section asked "what is PM?"
Over there it would most likely be a private message but in a pattern it would me place marker.
Do I get credit for two entries? Oh, I better look for MM too (move marker) [Edit: MM is not on the list either.]
And another explanation of DPH would be double pointed hooks (crochet specific? perhaps).
DPHs are more often called double ended hooks or Cro-hooks (a trademark of Boye) and they are used in Crochet-on-the-double and Croknit (sometimes crochetnit). They use the Tunisian stitch and two strands of yarn (one at each end of the hook) to create a two sided Tunisian stitch fabric.
Master of Crochet, apprentice of Knit