>>>>> "VV" == Vladimir Volovich <[log in to unmask]> writes: [Yeah, I know, it's weeks ago. But then, I don't come to read TeX mailing lists so often nowadays. ;-) ] VV> [ But there is really only one correct parser---TeX ;-) ] No. There exist other(s). Besides those parsers mentioned here, that often parse only a subset of TeX, I've written a full system, called TLSI (TeX Language Specification Interpreter). It's described in TUGboat, in the St.Barbara proceedings. Of course, as TeX doesn't have much syntax anyhow (at least not in the sense normal CS folks think of syntax), that doesn't buy you much. What one really would need are hooks in the yet-to-be-written typesetting and data engine. Cheers, Joachim -- =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Joachim Schrod Email: [log in to unmask] Net & Publication Consultance GmbH Tel.: +49-6074-861530 Roedermark, Germany Fax: +49-6074-861531