That's not bad, but I'm wondering when you'd a) need to know the exact column the event ends up being generated in but b) imprecisely enough that a vertical line will be sufficient. The only two times I can think of that I've been concerned with the exact column like that are a) five event MCEs, necessarily and b) something that's going to interact with the masking somehow, and I'm not sure a vertical line would be enough. Obviously those are just simplified examples, but why else would you ever use numbers besides 32, 64, 96, and 127?