In {HEAD ~ the closed position}, {TAIL ~ a portion} of the display is obstructed by the keyboard unit 
In { HEAD ~ the closed position } , { TAIL ~ a portion } of the display is obstructed by the keyboard unit
OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH