Actually, I think law 12 does in a way
by catripledomer (2022-10-04 18:50:13)

In reply to: I'd say it works that way at the higher levels  posted by wcnitz

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That's the point of a caution for persistent infringement, right? You break the rules multiple times, you get a caution. At that point you are already persistent, so additional transgressions would be even more persistent.

Sure, that's what PI is for
by wcnitz  (2022-10-04 20:37:25)     cannot delete  |  Edit  |  Return to Board  |  Ignore Poster   |   Highlight Poster  |   Reply to Post

But there's no 'additionally persistent', and, generally, you'll never see a second yellow for PI because the player had already checked their behavior because of the original caution.