Quote Originally Posted by Gumby View Post
In the comms section of the keybinds settings.

Sent from the land of bier and bretzels on my Galaxy S3 using Tapatalk
Ah. I could be wrong, but I think that is to reply to the ingame friends messaging. When you get a message, it will show up in your chat (as yellow I believe) and/or popup at the bottom of the screen. I believe that is the button you can press to go straight to replying to it without having to address it.