#992207: document that the parser only accepts \\n newlines.
diff --git a/Doc/reference/simple_stmts.rst b/Doc/reference/simple_stmts.rst
index c15f796..6ae0317 100644
--- a/Doc/reference/simple_stmts.rst
+++ b/Doc/reference/simple_stmts.rst
@@ -966,7 +966,7 @@
This statement supports dynamic execution of Python code. The first expression
should evaluate to either a string, an open file object, or a code object. If
it is a string, the string is parsed as a suite of Python statements which is
-then executed (unless a syntax error occurs). If it is an open file, the file
+then executed (unless a syntax error occurs). [#]_ If it is an open file, the file
is parsed until EOF and executed. If it is a code object, it is simply
executed. In all cases, the code that's executed is expected to be valid as
file input (see section :ref:`file-input`). Be aware that the
@@ -1004,3 +1004,8 @@
which may be useful to pass around for use by :keyword:`exec`.
+.. rubric:: Footnotes
+
+.. [#] Note that the parser only accepts the Unix-style end of line convention.
+ If you are reading the code from a file, make sure to use universal
+ newline mode to convert Windows or Mac-style newlines.