For example, {TAIL ~ the internal features} can serve to mechanically constrain {HEAD ~ internal parts} to the enclosure 
For example , { TAIL ~ the internal features } can serve to mechanically constrain { HEAD ~ internal parts } to the enclosure
OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH