{TAIL ~ Methods} and systems for using a foot based interface to interact with {HEAD ~ a computer} are described 
{ TAIL ~ Methods } and systems for using a foot based interface to interact with { HEAD ~ a computer } are described
TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH