Term or Abbreviation:

What it means or stands for:(Abbr. = Abbreviation      Syn. = Synonym)

*NM*

- Abbr. for No Message. It means that the post contains No Message inside and that the subject of the post contains the whole message (used on HBO Forum).

*OT*

- Abbr. for Off Topic. It means that the post contains a message that does not involve Halo (used on HBO Forum).

343GS

- Abbr. for 343 Guilty Spark (a single player and cooperative level, also the name of a character in the game).

AI

- Abbr. for Artificial Intelligence (Ex: Cortana).

Alien weapons

- Syn. for Covenant weapons (usually a derogatory term).

AotCR

- Abbr. for Assault on the Control Room (a single player and cooperative level).

BG

- Abbr. for Blood Gulch (a multiplayer level).

Box

- Syn. for Xbox (used in GameSpy Arcade rooms).

Camper

- Someone who only stands in one spot or area for a long period of time in multiplayer (a derogatory term).

Cap

- Abbr. for Capture.

Car/s

- Syn. for Vehicle/s (usually referring to the Warthog and commonly used by newbies).

Cloak

- Syn. for Active Camouflage.

Coop or Co-op

- Abbr. for Cooperative.

CTF

- Abbr. for Capture The Flag (a multiplayer mode).

DM

- Abbr. for Deathmatch, Syn. for Slayer (a multiplayer mode).

Echo 419 or E419

- Syn. for Foe Hammer.

FoR

- Abbr. for The Fall of Reach (a novel based on Halo written by Eric Nylund).

Gaydar

- Syn. For radar (a derogatory term).

GS

- Abbr. for GameSpy Arcade.

HBO

- Abbr. for Halo.Bungie.Org (the ultimate Halo fan site!)

HM or HM?

- Abbr. for How many players on your Xbox? (used in GameSpy Arcade rooms).

How many?

- Abbr. for How many players on your Xbox? (used in GameSpy Arcade rooms).

IMO

- Abbr. for In My Opinion (used on HBO Forum).

IMHO

- Abbr. for In My Humble Opinion (used on HBO Forum).

Jackhammer

- Syn. for Rocket launcher and SPNKR.

Jeep

- Syn. for the Warthog.

KOTH

- Abbr. for King Of The Hill (a multiplayer mode).

Frag

- Syn. for kill, also short for Fragmentation Grenade.

LAAG

- The gun on the Warthog.

LAN

- Abbr. for Local Area Network (a way of playing massive multiplayer games).

LZ

- Abbr. for Landing (or Loading) Zone (usually refers to the LZ at the beginning of The Silent Cartographer).

M$

- Abbr. for Microsoft (usually a derogatory term used on the HBO Forum).

MC

- Abbr. for Master Chief (if you don't know who he is...thats just sad).

MP

- Abbrev. for Multiplayer.

Newb

- Abbr. for Newbie, Syn. for Noob.

Noob

- Syn. for Newb and Newbie.

Permalink

- Means that the link (the URL) is permanent (used at the bottom of every news post on HBO)

PoA

- Abbr. for Pillar of Autumn (a single player and cooperative level that shares the name of the ship you start out on).

SC

- Abbr. for The Silent Cartographer (a single player and cooperative level).

SP

- Abbrev. for Single Player.

SPNKR

- Syn. for Rocket launcher and Jackhammer.

SW

- Abbr. for Sidewinder (a multiplayer level).

T&R

- Abbr. for Truth and Reconciliation (a single player and cooperative level, also an official Bungie website).

TB

- Abbr. for Two Betrayals (a single player and cooperative level).

Tower

- The odd rock formation on Blood Gulch.

TS

- Abbr. for Team Slayer, Syn. for Death Match (a multiplayer mode).

UTC

- Abbr. for Coordinated Universal Time (used to show what time news has been posted on HBO)