{TAIL ~ The self aligning zipper} 23, wherein said first lower body further comprises {HEAD ~ a first alignment feature} 
{ TAIL ~ The self aligning zipper } 23 , wherein said first lower body further comprises { HEAD ~ a first alignment feature }
TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD