The automatic generator includes a specification tool for specifying a set of block descriptions representative of {HEAD ~ specified portions} of {TAIL ~ a database} 
The automatic generator includes a specification tool for specifying a set of block descriptions representative of { HEAD ~ specified portions } of { TAIL ~ a database }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL