A few years ago, I helped modding DID’s flight simulation games. I found the model format specifically hard to understand, so I wrote a viewer for it: 3View. It now has finally found its way onto my website.
I uploaded countless screenshots from the development phase with deep insight into the internals of EF2000 (), F‑22: Air Dominance Fighter (), and F‑22 Total Air War (). If you liked these games, you should have a look!