Extension for material properties?

[Willy Tschager]

But I think we all agreed on that no added info should be forced into the dat-files.
We don't want to recycle any file to add any metadata info.

We never agreed if information should be stored in a parallel library or just one file:

https://news.lugnet.com/cad/?n=11226

and we never will. I gave up on the topic and you should do the same.

w.