Inside {TAIL ~ each vent panel pocket} is {HEAD ~ a detachable flexible informational display panel} which can be stored inside each pocket and hidden from view 
Inside is
Inside { TAIL ~ each vent panel pocket } is { HEAD ~ a detachable flexible informational display panel } which can be stored inside each pocket and hidden from view
REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL REL HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH