clarify in/not in in case of infinite iterators; thanks to Sergey Skovorodkin from docs@
diff --git a/Doc/howto/functional.rst b/Doc/howto/functional.rst
index 8934d5e..f1ed07b 100644
--- a/Doc/howto/functional.rst
+++ b/Doc/howto/functional.rst
@@ -246,9 +246,9 @@
iterator argument and will return the largest or smallest element. The ``"in"``
and ``"not in"`` operators also support iterators: ``X in iterator`` is true if
X is found in the stream returned by the iterator. You'll run into obvious
-problems if the iterator is infinite; ``max()``, ``min()``, and ``"not in"``
+problems if the iterator is infinite; ``max()``, ``min()``
will never return, and if the element X never appears in the stream, the
-``"in"`` operator won't return either.
+``"in"`` and ``"not in"`` operators won't return either.
Note that you can only go forward in an iterator; there's no way to get the
previous element, reset the iterator, or make a copy of it. Iterator objects