For example, the manufacturer of a part may update a database housed on {HEAD ~ a users central computer} to reflect newer models, discontinued product, {TAIL ~ specification changes}, etc 
For example , the manufacturer of a part may update a database housed on { HEAD ~ a users central computer } to reflect newer models , discontinued product , { TAIL ~ specification changes } , etc
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH