{TAIL ~ A display system} having a plurality of {HEAD ~ wearable displays}, the display system comprising: 
{ TAIL ~ A display system } having a plurality of { HEAD ~ wearable displays } , the display system comprising :
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH