Oh - I'm also making it have pre-defined groups of materials. These are virtual selections you can make. For example, when you select a V4 figure, it automatically offers "skin" and "nails" as auto-selection groups so you can just drag a skin shader onto "Skin" and it goes to all the right places without you doing anything.

These groups will be editable by you.

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Renderosity forum reply notifications are wonky. If I read a follow-up in a thread, but I don't myself reply, then notifications no longer happen AT ALL on that thread. So if I seem to be ignoring a question, that's why. (Updated September 23, 2019)