Backport r54712: document that calling file.next() on a file open for writing
leads to undefined behaviour.
diff --git a/Misc/NEWS b/Misc/NEWS
index c0af383..bb8385f 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -25,6 +25,13 @@
   run in verbose mode.
 
 
+Documentation
+-------------
+
+- Bug #1569057: Document that calling file.next() on a file open for writing
+  has undefined behaviour.  Backport of r54712.
+
+
 What's New in Python 2.5.1?
 =============================