Issue #13557: Clarify effect of giving two different namespaces to exec or
execfile().
diff --git a/Misc/NEWS b/Misc/NEWS
index c5e2e92..52439fe 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -284,7 +284,9 @@
 - Issue #14437: Fix building the _io module under Cygwin.
 
 Documentation
--------------
+
+- Issue #13557: Clarify effect of giving two different namespaces to exec or
+  execfile().
 
 - Issue #14034: added the argparse tutorial.