The retracted position has {HEAD ~ the bolster section} 144 contained within {TAIL ~ the conventional cushion area} 142 
contained within
The retracted position has { HEAD ~ the bolster section } 144 contained within { TAIL ~ the conventional cushion area } 142
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH