diff --git a/examples/maps/manhattan_grid/js/example.js b/examples/maps/manhattan_grid/js/example.js
index 8ac5a733..f84cc05b 100644
--- a/examples/maps/manhattan_grid/js/example.js
+++ b/examples/maps/manhattan_grid/js/example.js
@@ -608,7 +608,8 @@ Ox.load('Image', function() {
             width, height, invertX, invertY;
         /*
         On the street sign, we display both the avenue/street and the lat/lng
-        coordinates.
+        coordinates. `Ox.formatOrdinal` takes care of '1st', '2nd' '3rd', '4th',
+        etc.
         */
         $sign.html(
             Ox.formatOrdinal(as.avenue) + ' Av & '