diff --git a/docs/web-ui/dashboard.md b/docs/web-ui/dashboard.md
index 189aafc8..0328ed54 100644
--- a/docs/web-ui/dashboard.md
+++ b/docs/web-ui/dashboard.md
@@ -979,7 +979,10 @@ that's a browser-level decision, not ours.
   approval with an optional operator-supplied reason. The reason
   travels to the manager as `HelperEvent::ApprovalResolved.note`
   and also rides on the dashboard's `ApprovalResolved` event.
-  Dashboard prompts via `window.prompt()` on click.
+  Dashboard prompts via the themed `themedPrompt()` dialog on
+  click — a resizable `<textarea>` where Enter submits and
+  Shift+Enter inserts a newline (so multi-sentence rejection
+  notes are possible).
 - `POST /{rebuild,kill,restart,start,destroy}/{name}` — lifecycle.
   `destroy` accepts `purge=on` to also wipe state dirs.
 - `POST /purge-tombstone/{name}` — wipe a tombstone's state dirs.