Start with the draw board and readings kept by three connected rooms. It is the source used to decide how a shared cistern turn is measured at the branch that fills last; it is not the decision itself. The rule only works if the source describes conditions at the cistern at Lantern Well.
Known: the current file counts 28 draw turns recorded at each branch connection, compared with 34 in the prior window. The map crew posts an updated card while keeping the earlier copy linked. The entries have dates and a named clerk.
Disputed: The cistern keeper counts one release. The far branch residents say their turn begins after the near room has closed its valve. One side emphasizes the posted total; the other points to the nearest room fills before the far branch opens.
Why it matters: the decision determines which residents can rely on the service and which staff must carry out the change. The file does not settle that by itself.
Next: The responsible office has begun the follow-up set by the board, which closed the file after both approaches matched the public map.
