Some cleanup in the docs.
diff --git a/Doc/tutorial/datastructures.rst b/Doc/tutorial/datastructures.rst
index c243fe3..9f3320f 100644
--- a/Doc/tutorial/datastructures.rst
+++ b/Doc/tutorial/datastructures.rst
@@ -400,7 +400,7 @@
 There is a small bit of asymmetry here:  packing multiple values always creates
 a tuple, and unpacking works for any sequence.
 
-.. % XXX Add a bit on the difference between tuples and lists.
+.. XXX Add a bit on the difference between tuples and lists.
 
 
 .. _tut-sets: