{HEAD ~ The normal mode} utilizes a primary processor, which operates using {TAIL ~ a primary operating system} 
{ HEAD ~ The normal mode } utilizes a primary processor , which operates using { TAIL ~ a primary operating system }
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL