If you're in command input wait (DECWAR is waiting for you to
type a command, and the program name is set to DECWTI), typing
^C will abort the game and return you to monitor mode. When you
abort the game in this manner, your ship is returned to the pool
of available ships. You will be able to continue unless a new
player has taken your ship or someone has moved into the spot
you occupied.
If you're not in a command input wait state when you type ^C,
any stacked commands (commands that you typed in ahead of time
that haven't been executed yet) will be aborted, and a series of
bells will be output.
NOTE: A ship under RED alert conditions can not be returned to
the monitor level except by using the QUIT command.