Somewhere below the grid, past a hallway that isn't on any floor plan, a relay listens to frequencies that were never assigned. Signal Room 9 does not transmit. It only receives — patient, unmanned, indifferent to what it hears.
Three watch rotations keep the room lit. None of them have ever met. Correspondence is left in the log below, typed once, read once, and never acknowledged.
If you found this page, you were not supposed to. Proceed at your own clearance.