[antlr-interest] Can ANTLR aid grammar documentation?

[Tom Ball]

I hope this isn't a FAQ, but it's not on the list nor could I find any 
archive references.  Does anyone have tips on ways to generate 
documentation for an ANTLR-based grammar?  Not a complete language 
specification, of course (that's what specification languages are for), 
but we're interested in any documentation (or testing) artifacts that 
can be generated -- bitmap files of the syntax diagrams ANTLRWorks 
displays would be useful, for example.

Tom