If interleaving is activated, the control information also includes {TAIL ~ information} pertaining to how the read module should interleave {HEAD ~ the block} 
If interleaving is activated , the control information also includes { TAIL ~ information } pertaining to how the read module should interleave { HEAD ~ the block }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD