A method of producing {HEAD ~ an image} for viewing by {TAIL ~ an eye} in an image field with a portable head mounted display, comprising the steps of: 
for viewing by
A method of producing { HEAD ~ an image } for viewing by { TAIL ~ an eye } in an image field with a portable head mounted display , comprising the steps of :
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH