Elaborate encoding recommendations, and fix ambiguous wording for list comprehensions.
diff --git a/Doc/tutorial/controlflow.rst b/Doc/tutorial/controlflow.rst
index e266a04..5e4de0e 100644
--- a/Doc/tutorial/controlflow.rst
+++ b/Doc/tutorial/controlflow.rst
@@ -675,7 +675,12 @@
   (see :ref:`tut-firstclasses` for more on classes and methods).
 
 * Don't use fancy encodings if your code is meant to be used in international
-  environments.  Plain ASCII works best in any case.
+  environments.  Python's default, UTF-8, or even plain ASCII work best in any
+  case.
+
+* Likewise, don't use non-ASCII characters in identifiers if there is only the
+  slightest chance people speaking a different language will read or maintain
+  the code.
 
 
 .. rubric:: Footnotes