{TAIL ~ The bus} enables single or multiple controllers to access real time information generated by {HEAD ~ the attached hardware} 
{ TAIL ~ The bus } enables single or multiple controllers to access real time information generated by { HEAD ~ the attached hardware }
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD