diff --git a/03-DESIGN/01-to-be/47-milestones/G-22-lead-answers-2.md b/03-DESIGN/01-to-be/47-milestones/G-22-lead-answers-2.md
index 2701b027..3883e876 100644
--- a/03-DESIGN/01-to-be/47-milestones/G-22-lead-answers-2.md
+++ b/03-DESIGN/01-to-be/47-milestones/G-22-lead-answers-2.md
@@ -121,3 +121,7 @@ the principle that settles it, cited as "design 47 G A-n".
   per branch: its own pending revision (holding only that branch) and its own groups. `stepsVia` is open while the
   entry's fingerprint is still in the branch's newest revision; `messageVia` while a pending entry names the merge or
   a take-in of that commit runs.
+- **A-209** (design 46 approval mark §13, §677, §73; principles 3 and 7) A digest in a key is escaped with mesh-sdk's
+  `keys.EscapeName`, the one escape form for every name in a key, in both gates: `<node>.act.<escaped digest>`. The
+  kind (a test's in-memory state accepting a key the bus refuses) is fixed where it lives: mesh-sdk's in-memory state
+  for tests refuses every key the bus would.