* Yes
Used to acknowledge something and should mean you'll do it.
* No
Used to negate something, obviously.
* I've got it
Just like in baseball, when two defenders arrive to take over for a fallen defender, one of them needs to call it, otherwise both will turn away leaving it open or both will turn in and possibly kill each other.
* I'm going into the zone
Used to tell your team you're going into the opponent's zone, of course. Lets the defenders know if they need to just hold the attackers, or if they need to kill (defaults to "kill if possible"). Also, when followed by a "I need help" call can get an offensive player to help tip the zone over quicker, or at all (if there's a defender in the zone and you can't kill him, you might want to call for help to tip over the zone).
* I need help
Used to call for help, of course. Should only be used when you're at the enemy's zone or if you're defending yours and you're under pressure. If you're under pressure in general, you might still call for help, but saving your life may not be one of your team's priorities.
* Break
You need two, actually. One of them will be used always, one will be used only when you have a large team (i.e. 2 or more grinders on one side of the center). This one you need to decide who will use it, too, the center or someone near him.
* Incoming
Tells your defense that one or more opponents have passed and will soon be at the zone if not intercepted.
Your instant chats need to be accessible like regular movement keys.

Glance keys are z, x, and left-alt. a, s, d, c are instant chats 1-4. q, w, e, r, f, v are 5-10. 1 is #11, and left control is #12. I'm going to add more, too, because I also want:
* Acknowledged, I'm all over it.
* Acknowledged, can't do anything about it.
* Go right
* Go left
* I'm going right
* I'm going left
* I'm touching the wall
* I'm turning to center
* Play defensive, we're outnumbered or outclassed
* Incoming Right
* Incoming Left
Boy, that's a lot of instant chats.