John D. Heintz is a Senior Consultant at Innodata Isogen. He has over nine years of experience in software development and formal modeling. The last two years John has focussed on the versioning and configuration management of hyperdocument systems and there integration with other repositories. When John isn't wrestling with these abstract ideas he is a loving husband, a proud father of a two-year old son, and a dog owner. John may be contacted at mailto:jheintz@innodata-isogen.com