In a third aspect, {TAIL ~ the present invention} provides special retention means for firmly, but flexibly, retaining {HEAD ~ the side windows} in the frame 
In a third aspect , { TAIL ~ the present invention } provides special retention means for firmly , but flexibly , retaining { HEAD ~ the side windows } in the frame
OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH