DUH!

Sorry about that

Here it comes:

%H = Your current health. "80 Health"
%W = Your current weapon. "Sniper Rifle"
%A = Your current Armor. "Shieldbelt (150) and 0 Armor"
%P = Your current Position/Task. CTF Only.
"Attacking Enemy Flag Carrier" - Close to Enemy Flag Carrier
"Supporting Our Flag Carrier" - Close to Your Flag Carrier
"Attacking" - Close to Enemy Flag
"Defending" - Close to Your own Flag
"Floating" - Not close to any Flag
"Carrying Flag" - Guess

So to take an example, you would make the following bind.

TeamSay I am %P with %W having %A with %H left.

which could translate to

I am Attacking with Rocket Launcher having 50 Armor with 100 Health left.

Hope this helps