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Version History:

 1.0 1996-01-01 initial version

 1.1 1996-01-01 convert to CMP standards.

 1.2 2000-01-01 add Javadoc, fix deprecated methods, ANT build, Lucida Sans
                font, used ActionListener to avoid action method.

 1.3 2000-01-01 change font names to new undeprecated names.

 1.4 2000-01-01 convert to JDK 1.1+ event model, using listeners and
                anonymous inner classes.

 1.5 2006-03-05 reformat with IntelliJ, add Javadoc

 1.6 2008-01-02 add pad and icons

 1.7 2010-01-07 add title, about box and instructions

 1.8 2010-11-27 convert to Swing and allow any Font. Now requires JDK 1.5+.

 1.9 2014-08-24 make screen more readable, bigger font, anti-aliased.

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