Is there a way to create, adjust, and view my materials as nodes? For example, I want to be able to create one "stainless_steel" texture, then apply it to five different materials. I want to be able to tell each of thost five materials whether or not I want them to update if I make updates to the original "stainless_steel", or if I want them to become completely independent, or maybe I want them to become additive. Any suggestions?