How do you text on Left 4 Dead 2

To text on Left 4 Dead 2 is the same as in Left 4 Dead 1. To talk to all players on the server, press the "Y" button, type in your message, and press "Enter" or "Return" to send your message. To chat with your teammates only (survivors or infected), press the "U" button, type in your message, and press "Enter" or "Return" to send your message.