A parser generator written in Forth by Martin Anton Ertl Complang.tuwien.aC.at>. Gray takes grammars in an extended BNF and produCes exeCutable Forth Code for reCursive desCent parsers. There is no speCial support for error handling. Version 3 runs under Tile Forth Release 2 by Mikael Patel. (1992-05-22)