Whitespace normalization, via reindent.py.
diff --git a/Demo/tkinter/matt/two-radio-groups.py b/Demo/tkinter/matt/two-radio-groups.py
index 5c17333..9fd8f4f 100644
--- a/Demo/tkinter/matt/two-radio-groups.py
+++ b/Demo/tkinter/matt/two-radio-groups.py
@@ -1,44 +1,44 @@
 from Tkinter import *
 
-#	The way to think about this is that each radio button menu
-#	controls a different variable -- clicking on one of the
-#	mutually exclusive choices in a radiobutton assigns some value
-#	to an application variable you provide. When you define a
-#	radiobutton menu choice, you have the option of specifying the
-#	name of a varaible and value to assign to that variable when
-#	that choice is selected. This clever mechanism relieves you,
-#	the programmer, from having to write a dumb callback that
-#	probably wouldn't have done anything more than an assignment
-#	anyway. The Tkinter options for this follow their Tk
-#	counterparts: 
-#	{"variable" : my_flavor_variable, "value" : "strawberry"}
+#       The way to think about this is that each radio button menu
+#       controls a different variable -- clicking on one of the
+#       mutually exclusive choices in a radiobutton assigns some value
+#       to an application variable you provide. When you define a
+#       radiobutton menu choice, you have the option of specifying the
+#       name of a varaible and value to assign to that variable when
+#       that choice is selected. This clever mechanism relieves you,
+#       the programmer, from having to write a dumb callback that
+#       probably wouldn't have done anything more than an assignment
+#       anyway. The Tkinter options for this follow their Tk
+#       counterparts:
+#       {"variable" : my_flavor_variable, "value" : "strawberry"}
 #       where my_flavor_variable is an instance of one of the
 #       subclasses of Variable, provided in Tkinter.py (there is
-#	StringVar(), IntVar(), DoubleVar() and BooleanVar() to choose
-#	from) 
+#       StringVar(), IntVar(), DoubleVar() and BooleanVar() to choose
+#       from)
 
 
 
 def makePoliticalParties(var):
-    # make menu button 
-    Radiobutton_button = Menubutton(mBar, text='Political Party', 
-				    underline=0)
+    # make menu button
+    Radiobutton_button = Menubutton(mBar, text='Political Party',
+                                    underline=0)
     Radiobutton_button.pack(side=LEFT, padx='2m')
-    
+
     # the primary pulldown
     Radiobutton_button.menu = Menu(Radiobutton_button)
 
-    Radiobutton_button.menu.add_radiobutton(label='Republican', 
-					    variable=var, value=1)
+    Radiobutton_button.menu.add_radiobutton(label='Republican',
+                                            variable=var, value=1)
 
-    Radiobutton_button.menu.add('radiobutton', {'label': 'Democrat', 
-						'variable' : var, 
-						'value' : 2})
+    Radiobutton_button.menu.add('radiobutton', {'label': 'Democrat',
+                                                'variable' : var,
+                                                'value' : 2})
 
-    Radiobutton_button.menu.add('radiobutton', {'label': 'Libertarian', 
-						'variable' : var, 
-						'value' : 3})
-    
+    Radiobutton_button.menu.add('radiobutton', {'label': 'Libertarian',
+                                                'variable' : var,
+                                                'value' : 3})
+
     var.set(2)
 
     # set up a pointer from the file menubutton back to the file menu
@@ -48,22 +48,22 @@
 
 
 def makeFlavors(var):
-    # make menu button 
-    Radiobutton_button = Menubutton(mBar, text='Flavors', 
-				    underline=0)
+    # make menu button
+    Radiobutton_button = Menubutton(mBar, text='Flavors',
+                                    underline=0)
     Radiobutton_button.pack(side=LEFT, padx='2m')
 
     # the primary pulldown
     Radiobutton_button.menu = Menu(Radiobutton_button)
 
     Radiobutton_button.menu.add_radiobutton(label='Strawberry',
-					    variable=var, value='Strawberry')
+                                            variable=var, value='Strawberry')
 
     Radiobutton_button.menu.add_radiobutton(label='Chocolate',
-					    variable=var, value='Chocolate')
+                                            variable=var, value='Chocolate')
 
     Radiobutton_button.menu.add_radiobutton(label='Rocky Road',
-					    variable=var, value='Rocky Road')
+                                            variable=var, value='Rocky Road')
 
     # choose a default
     var.set("Chocolate")
@@ -88,7 +88,7 @@
 mBar = Frame(root, relief=RAISED, borderwidth=2)
 mBar.pack(fill=X)
 
-# make two application variables, 
+# make two application variables,
 # one to control each radio button set
 party = IntVar()
 flavor = StringVar()
@@ -96,12 +96,12 @@
 Radiobutton_button = makePoliticalParties(party)
 Radiobutton_button2 = makeFlavors(flavor)
 
-# finally, install the buttons in the menu bar. 
+# finally, install the buttons in the menu bar.
 # This allows for scanning from one menubutton to the next.
 mBar.tk_menuBar(Radiobutton_button, Radiobutton_button2)
 
 b = Button(root, text="print party and flavor", foreground="red",
-	   command=printStuff)
+           command=printStuff)
 b.pack(side=TOP)
 
 root.title('menu demo')