But can you do this with parser rules? Xiaoran -----Original Message----- From: antlr-interest-bounces at antlr.org [mailto:antlr-interest-bounces at antlr.org] On Behalf Of Terence Parr Sent: Wednesday, August 16, 2006 1:59 PM To: Antlr Interest Subject: Re: [antlr-interest] skip the grammer Hi, look at filter mode :) Terence