by Stephen Ferg (steve@ ferg.org) revised: 2005-07-17 This file contains the source code for all of the files in the Thinking in Tkinter series. If you print this file with a small font, you should be able to print it in portrait mode without truncating the ends of any of the lines of code. If you print it, and find that you ARE truncating lines of code, consider printing it in a smaller