{HEAD ~ The head} is shaped to define a channel for receiving an exposed margin or flange of a hinge mount to rigidly engage {TAIL ~ the hinge} 
{ HEAD ~ The head } is shaped to define a channel for receiving an exposed margin or flange of a hinge mount to rigidly engage { TAIL ~ the hinge }
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL