In another example, a zoom out command is generated and further transmitted when {HEAD ~ the camera based device} 115 is moved along the axis away from {TAIL ~ the display device} 105 
is moved away from
In another example , a zoom out command is generated and further transmitted when { HEAD ~ the camera based device } 115 is moved along the axis away from { TAIL ~ the display device } 105
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH