{HEAD ~ Embodiments} of the present invention pertain to {TAIL ~ a foot based interface} for interacting with a computer 
pertain to
{ HEAD ~ Embodiments } of the present invention pertain to { TAIL ~ a foot based interface } for interacting with a computer
HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH