diff -r 9f4b066754c3 Doc/library/threading.rst
--- a/Doc/library/threading.rst	Tue Jun 23 14:31:11 2015 +0200
+++ b/Doc/library/threading.rst	Sat Jul 04 17:00:55 2015 +0800
@@ -780,7 +780,12 @@
    t.start() # after 30 seconds, "hello, world" will be printed
 
 
-.. class:: Timer(interval, function, args=[], kwargs={})
+.. function:: Timer(interval, function, args=[], kwargs={})
+
+    A factory function to create :class:`threading._Timer` object.
+
+
+.. class:: _Timer(interval, function, args=[], kwargs={})
 
    Create a timer that will run *function* with arguments *args* and  keyword
    arguments *kwargs*, after *interval* seconds have passed.