In {HEAD ~ another form} of {TAIL ~ the present specification}, the closure track of the window assembly has an origination point that makes a predetermined angle between the linear path of the movable window panel and the end point of the closure track 
In { HEAD ~ another form } of { TAIL ~ the present specification } , the closure track of the window assembly has an origination point that makes a predetermined angle between the linear path of the movable window panel and the end point of the closure track
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