{TAIL ~ A block layout generator} produces interface objects to be included within an interface of the database, wherein each of the interface objects corresponds to one of the block descriptions and includes {HEAD ~ a plurality} of layout fields 
{ TAIL ~ A block layout generator } produces interface objects to be included within an interface of the database , wherein each of the interface objects corresponds to one of the block descriptions and includes { HEAD ~ a plurality } of layout fields
TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH