Jfkclient control keys:

At this time, the keys to control jfkclient are hard-coded and cannot be
changed. We plan to change this in a future version.

Key                     | Function
------------------------+-----------------
<Escape>                | Quits the game
<Up>                    | Move forward
<Down>                  | Move backward
<Left>                  | Turn to the left
<Right>                 | Turn to the right
<Left Control>          | Fire current weapon
<Tabulator>             | Change to next weapon
<Enter>                 | Switch to message mode

In the message mode you can use most keys including <Backspace>. Your message
will be displayed while you are typing. If you are finished press <Enter> again
to send the message to all other players. Putting a name of a player followed
by a colon before your actual text causes the message to be sent only to that
player.