The board repeats Fork's grammar at room scale. Fixed station power can hold rack and shutter together only while that one Fork is installed; Fork supplies no power. Moving it from rig or cargo costs exposed time and ends the personal branch. The player can remount Manual when able. Suit and board never share the benefit.
- **Install Fork in the board.** Rack arms and shutter stay held while the board's power continues. The board and floor frame are separate. Beside the frame, reachable before crossing, the [hand-operated shutter latch](/Hold%20The%20Flood/Encounter%20And%20Mechanism%20Placement%20Inventory) can be turned while the shutter is across. Completing its cycle mechanically secures the closure after power is gone. The work takes time while the game runs; interruption loses the current hand-cycle, and installing Fork alone does not secure it.
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- **Keep Fork personal or carried.** The selector must hold the rack during removal, so the undogged shutter is not held and its approach stays open. The player keeps the personal branch or manual option and avoids installation/retrieval time, but accepts that lane.
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- **Keep Fork personal or carried.** The selector must hold the rack during removal, so the unlatched shutter is not held and its approach stays open. The player keeps the personal branch or manual option and avoids installation/retrieval time, but accepts that lane.
Without Fork, the player can use the selector to hold the shutter across, complete its latch, then return power to the rack. This costs exposed time. The unpowered rack relocks at the last completed fastener; work resumes when rack power returns. After bridge removal the rack needs no power. An unlatched shutter returns neutral on withdrawal or death; the completed latch persists. The airlock route never crosses the floor frame or shutter lane.
