{HEAD ~ The flap} 2, wherein the cassette supporting means includes a pair of ribs projecting from {TAIL ~ an interior wall} of the cassette, and said mounting end is supported by one of the ribs and said tab portion is supported by the other of said ribs 
{ HEAD ~ The flap } 2 , wherein the cassette supporting means includes a pair of ribs projecting from { TAIL ~ an interior wall } of the cassette , and said mounting end is supported by one of the ribs and said tab portion is supported by the other of said ribs
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH