diff --git a/justice/Rehabilitation.md b/justice/Rehabilitation.md
index 86b5f9f..f12eb8d 100644
--- a/justice/Rehabilitation.md
+++ b/justice/Rehabilitation.md
@@ -102,9 +102,12 @@ Classification always computed a **security grade** (`Minimum`..`Supermax`); now
 
 - **The grade shows** on every prisoner's inspect pane — the game tells you who is dangerous instead of
   leaving you to guess.
-- A **"Dangerous prisoner unsecured" alert** fires when a Maximum/Supermax pawn is held in the open or
-  sharing a cell — the misplacement flag, without a wing-grading UI. It clears once they have a secure,
-  solo cell.
+- **Wing-routing.** A wall-mounted **security marker** grades the cell block it stands in
+  (`Minimum`..`Supermax`, set with a gizmo). One marker covers a *whole block* — a prisoner takes the
+  grade of the nearest marker in range, so you tag a corridor once rather than cluttering every cell. A
+  **"Dangerous prisoner unsecured" alert** then flags any prisoner held in a wing too weak for their
+  grade, and the inspect pane shows their wing and a `MISPLACED` warning — move them to a stronger
+  wing. An ungraded wing falls back to flagging an unsegregated Maximum/Supermax pawn.
 - **Cell safety:** a prisoner caged with a dangerous one suffers a mood penalty. Segregate your
   dangerous prisoners, or their cellmates pay for it — the grade made to matter on the *housing* side,
   not only at parole.