diff -r 2dd134a86996 -r da2007002dca doc/3.17.rst
--- a/doc/3.17.rst	Wed Apr 24 11:58:49 2013 +0200
+++ b/doc/3.17.rst	Wed Apr 24 12:10:12 2013 +0200
@@ -32,7 +32,8 @@
   ``ActualNotificationOp`` the new operation use the more efficient *data*
   idiom.
 
-* Looping task can now have a ``0`` interval.
+* Looping task can now have a interval <= ``0``. Negative interval disable the
+  looping task entirely.
 
 
 Deprecation