==== The Grammars

arq.jj - The native query language of the query engine
  Generates com.hp.hpl.brql.parser.ARQParser

sparql.jj - The DAWG working group syntax
   This should be exactly the grammar in the DAWG rec.
   Generates com.hp.hpl.brql.parser.SPARQLParser
   There is a second pass to reorganise for grouped triple patterns.

Coming sometime:
 
brql-rdql.jjt - The modified RDQL grammar that is the original BRQL design
  Generates com.hp.hpl.brql.parser1, uses jjtree to create an AST which is
  the expression evaluation tree as well.

==== Making the parsers

See "grammar"

==== Making the HTML

sparql.txt is produced by "grammar"

Run "jj2tokesn sparql.jj > tokens.txt"