Save/scenario file formats

[Zoetermeer]

Is any information published about how to read these files, if I wanted to write a program to do it?  I want to write a tracker/housekeeping app for this.  I don't care so much about PBEM games and I think those are encrypted anyway, I really just want it for my solo games.  The files are just text files, but just contain mostly numbers.  I could probably figure out how to interpret them with some trial and error, but figured I'd ask in case there is any documentation out there.