Maximum number of lines to display simultaneously.
The currently displayed strings, limited by the given timeframe and limit above.
Number of seconds after which chatmessages will disappear.
Holds the timer-IDs used for hiding the chat after chatTimeout seconds.
Empty all messages currently displayed in the chat overlay.
Displays this message in the chat overlay and sets up the timer to remove it after a while.
Called when the timer has run out for the oldest chatmessage or when the message limit is reached.