Whitespace normalization, via reindent.py.
diff --git a/Demo/tkinter/matt/dialog-box.py b/Demo/tkinter/matt/dialog-box.py
index cbfe29f..dea8f39 100644
--- a/Demo/tkinter/matt/dialog-box.py
+++ b/Demo/tkinter/matt/dialog-box.py
@@ -6,59 +6,59 @@
 
 class Test(Frame):
     def printit(self):
-	print "hi"
+        print "hi"
 
     def makeWindow(self):
-	"""Create a top-level dialog with some buttons.
+        """Create a top-level dialog with some buttons.
 
-	This uses the Dialog class, which is a wrapper around the Tcl/Tk
-	tk_dialog script.  The function returns 0 if the user clicks 'yes'
-	or 1 if the user clicks 'no'.
-	"""
-	# the parameters to this call are as follows: 
-	d = Dialog(
-	    self,			## name of a toplevel window
-	    title="fred the dialog box",## title on the window
-	    text="click on a choice",	## message to appear in window
-	    bitmap="info",		## bitmap (if any) to appear;
-					## if none, use ""
-	    #     legal values here are:
-	    #      string      what it looks like
-	    #      ----------------------------------------------
-	    #      error       a circle with a slash through it
-	    #	   grey25      grey square
-	    #	   grey50      darker grey square
-	    #	   hourglass   use for "wait.."
-	    #	   info        a large, lower case "i"
-	    #	   questhead   a human head with a "?" in it
-	    #	   question    a large "?"
-	    #	   warning     a large "!" 
-	    #        @fname    X bitmap where fname is the path to the file  
-	    #
-	    default=0,    # the index of the default button choice.
-			  # hitting return selects this
-	    strings=("yes", "no"))
-			  # values of the 'strings' key are the labels for the 
-			  # buttons that appear left to right in the dialog box
-	return d.num
+        This uses the Dialog class, which is a wrapper around the Tcl/Tk
+        tk_dialog script.  The function returns 0 if the user clicks 'yes'
+        or 1 if the user clicks 'no'.
+        """
+        # the parameters to this call are as follows:
+        d = Dialog(
+            self,                       ## name of a toplevel window
+            title="fred the dialog box",## title on the window
+            text="click on a choice",   ## message to appear in window
+            bitmap="info",              ## bitmap (if any) to appear;
+                                        ## if none, use ""
+            #     legal values here are:
+            #      string      what it looks like
+            #      ----------------------------------------------
+            #      error       a circle with a slash through it
+            #      grey25      grey square
+            #      grey50      darker grey square
+            #      hourglass   use for "wait.."
+            #      info        a large, lower case "i"
+            #      questhead   a human head with a "?" in it
+            #      question    a large "?"
+            #      warning     a large "!"
+            #        @fname    X bitmap where fname is the path to the file
+            #
+            default=0,    # the index of the default button choice.
+                          # hitting return selects this
+            strings=("yes", "no"))
+                          # values of the 'strings' key are the labels for the
+                          # buttons that appear left to right in the dialog box
+        return d.num
 
 
     def createWidgets(self):
-	self.QUIT = Button(self, text='QUIT', foreground='red', 
-			   command=self.quit)	
-	self.QUIT.pack(side=LEFT, fill=BOTH)
+        self.QUIT = Button(self, text='QUIT', foreground='red',
+                           command=self.quit)
+        self.QUIT.pack(side=LEFT, fill=BOTH)
 
-	# a hello button
-	self.hi_there = Button(self, text='Make a New Window', 
-			       command=self.makeWindow)
-	self.hi_there.pack(side=LEFT)
+        # a hello button
+        self.hi_there = Button(self, text='Make a New Window',
+                               command=self.makeWindow)
+        self.hi_there.pack(side=LEFT)
 
 
     def __init__(self, master=None):
-	Frame.__init__(self, master)
-	Pack.config(self)
-	self.windownum = 0 
-	self.createWidgets()
+        Frame.__init__(self, master)
+        Pack.config(self)
+        self.windownum = 0
+        self.createWidgets()
 
 test = Test()
 test.mainloop()