A system 10 wherein said second support defines {HEAD ~ a slot} of {TAIL ~ predetermined dimensions} therein for removably receiving said second hinge side within said slot 
of
A system 10 wherein said second support defines { HEAD ~ a slot } of { TAIL ~ predetermined dimensions } therein for removably receiving said second hinge side within said slot
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH