Hello Just for information next link are dead : http://antlr.org/papers/parr.phd.thesis.ps.gz http://antlr.org/papers/parr.phd.thesis.ps.zip ------------------------------------------------- Laboratoire Heudiasyc. UMR CNRS 6599 http://www.hds.utc.fr Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/