[antlr-interest] Problem Creating Imaginary Node

[Dejas Ninethousand]

Based on my understanding of the documentation at
http://www.antlr.org/wiki/display/ANTLR3/Tree+construction I am attempting
to create an imaginary node on my AST via:

declaration
    : type_identifier IDENTIFIER -> ^(DECLtype_identifier IDENTIFIER)
    ;

But whenever I try to generate the code from within ANTLRWorks 1.1.5 it
complains that DECL is an undefined token.  What am I missing?  Thanks.

--Dejas
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