Improve section heading for better discoverability.
diff --git a/Doc/tutorial/classes.rst b/Doc/tutorial/classes.rst
index 9f115b0..95a3a83 100644
--- a/Doc/tutorial/classes.rst
+++ b/Doc/tutorial/classes.rst
@@ -534,8 +534,8 @@
.. _tut-private:
-Private Variables
-=================
+Private Variables and Class-local References
+============================================
"Private" instance variables that cannot be accessed except from inside an
object don't exist in Python. However, there is a convention that is followed