-in three chapters: "Heidi: our first Inform game" on page 33, "Reviewing
-the basics" on page 49 and "Heidi revisited" on page 59. Here is a
-run-time transcript, and then the original and extended source files.
+in three chapters: :doc:`/chapters/03`, :doc:`/chapters/04` and
+:doc:`/chapters/05`. Here is a run-time transcript, and then the original
+and extended source files.