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