As the front cover moves, the front cover induces {HEAD ~ the slider} to move {TAIL ~ the lateral tray} for improved convenience 
to move
As the front cover moves , the front cover induces { HEAD ~ the slider } to move { TAIL ~ the lateral tray } for improved convenience
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH