What is a list of knitting pattern abbreviations and their meanings?

Kn: knit n stitches
Pn: purl n stitches
S: slip stitch
YO: yarn over
CC: contrast color
Mn: make n stitches
Inc n: increase n stitches
KnT: knit n together
PnT: purl n together
RT: right twist (cabling)
LT: left twist (cabling)
PRT: purl right twist
PLT: purl left twist
(): special instructions