The top left part of the Team Selection window is called the Message Of The Day, or MOTD. This window contains whatever information the server administrator (GOD) has decided to display.
You can scroll the text in the window using 'f', 'b', 'F', 'B' keys to scroll one line forward, one line backward, one page forward, or one page backward.
You can also press 'R' to send a statistics reset request to server.