https://github.com/opless/small-prolog-walnut-creek-original
Is a copy of the PD prolog used in the PNP system in NT
More details (and probably where the original article was sourced from) http://www.drdobbs.com/cpp/extending-c-with-prolog/184409294
Finally a good write up by Microsoft themselves
https://web.archive.org/web/20040603192757/research.microsof...