RP: roleplaying
DM: Dungeon Master
PG: Player Guide
PL: Player Lead
PC: Player Character
NPC: Non-Player Character
IC: in-character
OOC: out-of-character
IG: in game
PK: player killing
PvP: Player vs. Player
PnP: Pen and Paper (a style of tabletop roleplaying)
DnD: Dungeons & Dragons
NWN: Neverwinter Nights
AoE: Area of Effect
MS: Move Silently
(Saving for later: https://narfell.us/forum/topic/16441/players-handbook-of-narfell-and-rules-compendium)