Document extra argument for Python append().
diff --git a/runtime/doc/todo.txt b/runtime/doc/todo.txt
index 547941b..adb7140 100644
--- a/runtime/doc/todo.txt
+++ b/runtime/doc/todo.txt
@@ -300,7 +300,7 @@
opening/closing window causes other window with 'winfixheight' to change
height. Also happens when there is another window in the frame, if it's not
-very high. (Yegappan Lakshmanan, 2010 Jul 22)
+very high. (Yegappan Lakshmanan, 2010 Jul 22, Michael Peeters, 2010 Jul 22)
Directory wrong in session file, caused by ":lcd" in BufEnter autocommand.
(Felix Kater, 2009 Mar 3)