[Bioperl-l] genbank/embl format ebnf or other formal description

[Dan Kortschak]

Hello, this is slightly off-topic, but bioperl devs seemed like the most
likely people to get an answer to this from.

Is there an ebnf or other formal description of the genbank and embl
formats available some where. The only thing I can find is the verbosity
describing them in English at [1]. 

thanks
Dan

[1]http://www.insdc.org/documents/feature_table.html