I read in the forum, that in master_gdl.gdl script I can define materials, what my objects can use. I tried it, works nice. But I see that these materials can be changed by the user, but when I reload the library it nicely override the materials with the scripted values.
Is there any option that these materials be uneditable by the user in the material editor?
Is there any option that some of these materials not to be visilbe in the material editor?