Address substantially all of Eric Snow's comments in issue #15295, except for
those which now have additional XXX's here.  I'll get to those later. :)
diff --git a/Doc/whatsnew/3.3.rst b/Doc/whatsnew/3.3.rst
index 55d22dd..971ad7a 100644
--- a/Doc/whatsnew/3.3.rst
+++ b/Doc/whatsnew/3.3.rst
@@ -1677,6 +1677,8 @@
 This section lists previously described changes and other bugfixes
 that may require changes to your code.
 
+.. _portingpythoncode:
+
 Porting Python code
 -------------------