As far as I am aware, although the system is very capable it started as someone's PhD thesis in the mid 80s and has been developed since then. I worked on the

As far as I am aware, although the system is very capable it started as someone's PhD thesis in the mid 80s and has been developed since then. I worked on the data prepartion for a small HAFAS installation at one point and the specification was an absolute mess of fixed with text, delimited text and XML, sometimes all in the same file!