[antlr-interest] grammar inheritance

[Maciej Gawinecki]

Hi,

Jim Idle said that "The grammar inheritance functionality is intended 
for release 3.1" [1]

I'm converting SqlSQL2 grammar from ANTLR v2 to v3 and I'm wondering how 
can I express:

   class SqlSQL2Parser extends DmlSQL2Parser;

in v3.

Best,
Maciej

1. http://www.antlr.org/pipermail/antlr-interest/2007-October/024053.html