Hate to say this, but Bungie,we already knewwhat the X button did inHalo 3. But, in case you were one of the many non-interestedHaloparties not paying attention, theHalofolks have now clearly defined it for everyone. FromBungie:
You guys did see the final revelation of the mysterious X-Button. It’s what’s known (at the moment) asEquipment. The two very plain examples shown in the Vidoc were the Bubble Shield and the “Tripmine.” Both can be used in all manner of strategic and hilarious ways. There might have been another, but you may wait a month to see that one.
There you go. Feel better now?