For example, a user may select certain components to be used, thereby varying the secondary power rate, or may set the battery threshold at which {HEAD ~ power} is switched to {TAIL ~ the secondary processor} 
is switched to
For example , a user may select certain components to be used , thereby varying the secondary power rate , or may set the battery threshold at which { HEAD ~ power } is switched to { TAIL ~ the secondary processor }
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 HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL