diff --git a/unstable/lens/define-nested.scrbl b/unstable/lens/define-nested.scrbl
index d4155b5..ebf75fc 100644
--- a/unstable/lens/define-nested.scrbl
+++ b/unstable/lens/define-nested.scrbl
@@ -20,4 +20,17 @@ For example, if there is a @racket[top] struct containing a
 Will define @racket[top-middle-x-lens] and @racket[top-middle-y-lens]
 as @racket[(lens-thrush top-middle-lens middle-x-lens)] and
 @racket[(lens-thrush top-middle-lens middle-y-lens)].
-}
+
+@lens-unstable-examples[
+  (struct/lens ball (mass position velocity) #:transparent)
+  (struct/lens position (x y) #:transparent)
+  (struct/lens velocity (x y) #:transparent)
+  (define-nested-lenses [ball-pos ball-position-lens]
+    [x position-x-lens]
+    [y position-y-lens])
+  (define-nested-lenses [ball-vel ball-velocity-lens]
+    [x velocity-x-lens]
+    [y velocity-y-lens])
+  (lens-view ball-vel-x-lens (ball 1 (position 2 3) (velocity 4 5)))
+  (lens-set ball-vel-x-lens (ball 1 (position 2 3) (velocity 4 5)) 1004)
+]}