When the sensor senses a change in {TAIL ~ gravitational or inertial acceleration} of said data processing system, it alerts system electronics to temporarily park {HEAD ~ a read/write head} in a safe position 
When the sensor senses a change in { TAIL ~ gravitational or inertial acceleration } of said data processing system , it alerts system electronics to temporarily park { HEAD ~ a read / write head } in a safe position
OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH