In {HEAD ~ an embodiment} that is implemented using software, the software may be stored on a computer readable medium and loaded into computer system 550 by way of removable storage drive 562, interface 570, or {TAIL ~ communication interface} 574 
In { HEAD ~ an embodiment } that is implemented using software , the software may be stored on a computer readable medium and loaded into computer system 550 by way of removable storage drive 562 , interface 570 , or { TAIL ~ communication interface } 574
OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH