an IDE "find usages" on backtracking should show you in the support code. Ter On Feb 24, 2008, at 5:43 PM, Olivier Lefevre wrote: > Terence Parr wrote: >> typo. sorry. backtrack=true is correct. > > OK, thanks. I sent a notice using the Errata web form. > > What about my first question, though? > > -- O.L. >