diff --git a/Lib/tkinter/Tkconstants.py b/Lib/tkinter/Tkconstants.py
index dd4fb0e..3e2ff8a 100755
--- a/Lib/tkinter/Tkconstants.py
+++ b/Lib/tkinter/Tkconstants.py
@@ -56,6 +56,7 @@
 INSERT='insert'
 CURRENT='current'
 ANCHOR='anchor'
+ALL='all' # e.g. Canvas.delete(ALL)
 
 # Text widget and button states
 NORMAL='normal'