Regarding the cassette 20, including flap 21, {HEAD ~ the statements} in the context of {TAIL ~ the preferred embodiment} shown in FIG 2 apply correspondingly 
Regarding the cassette 20 , including flap 21 , { HEAD ~ the statements } in the context of { TAIL ~ the preferred embodiment } shown in FIG 2 apply correspondingly
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH