diff --git a/ui/frontend/src/routes/__debug/map/+page.svelte b/ui/frontend/src/routes/__debug/map/+page.svelte
index 9b0b907..3e34dc9 100644
--- a/ui/frontend/src/routes/__debug/map/+page.svelte
+++ b/ui/frontend/src/routes/__debug/map/+page.svelte
@@ -93,8 +93,10 @@
 					handle.viewport.moveCenter(cx, cy);
 					// `MovedEvent.type` is a closed literal union over the
 					// built-in plugin names; `"animate"` is the closest
-					// match for a programmatic move and the renderer's
-					// listeners read only `viewport`.
+					// match for a programmatic move. The renderer's
+					// listeners (and `pixi-viewport@6`'s own plugins)
+					// read only `viewport` — no consumer switches on
+					// `type`, so the choice is informational.
 					handle.viewport.emit("moved", {
 						viewport: handle.viewport,
 						type: "animate",