In {HEAD ~ the following detailed description} of {TAIL ~ such movements} of lid member 7 relative to casing 1, it will be assumed that the movements are effected mechanically by suitable lid actuating members 13 and 14 forming part of a recording and reproducing apparatus and being operable when the cassette is operatively positioned within such apparatus 
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In { HEAD ~ the following detailed description } of { TAIL ~ such movements } of lid member 7 relative to casing 1 , it will be assumed that the movements are effected mechanically by suitable lid actuating members 13 and 14 forming part of a recording and reproducing apparatus and being operable when the cassette is operatively positioned within such apparatus
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