CROQUET, HELP WITH KEYBOARD NAVIGATION

Hi,
      I'm in Ghana and just started developing in croquet. I was
wandering if you could help me    with navigation. i want to use the
keyboard (WSAD) to move my avatar. i saw an example in KAT and tried
to go through the source code but no success.
     Really need help.

                    Thanks,

                    Kweku D.