Maybe someone knows, I'm writing documentation for Heroes 5. In it, I describe the location of the game files and their various settings. If there are any volunteers who can help supplement the document, please write to me, preferably in a private message.
At the moment, I am collecting information bit by bit on the

 and 

blocks. Questions:
1. Describe how the

texture works, how does it work, as far as I understand, it's a gloss texture.
2. I don't know what

means.
In general, if there are people interested in sharing their knowledge, write.