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