Graphs off is certainly less common than on, but yeah, it's not really rare. And it was in the first post, even if it was a bit hidden
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Astryeal - just a tip, for any future games you host, it's a good idea to make a clear differentiation between the parts of the first post talking about the game, and the actual ruleset you'll be playing over.
That still won't guarantee everyone reads it, but it makes it much harder to miss.