Changes to Scratchpad between r14 and r15

'''How Big Is Mars?'''
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Mars, with a diameter of about 6800 kilometers., is a little more than half the size of Earth. If Earth was the size of a cricket ball, Mars would be about the size of a golf ball.
    -- http://www.lessonplanspage.com/more/205mar.html
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The Moon's diameter is 3,474 km.
    -- http://en.wikipedia.org/wiki/Moon
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The average diameter of the reference spheroid [[of the earth]] is about 12,742 km.
    -- http://en.wikipedia.org/wiki/Earth
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Difference between Mars and Moon: 3326km
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Difference between Mars and Earth: 5942km
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   * Test1
   ** Test2
   *** Test3
   * Test1

Legend

     Only in r14
     Only in r15
     -->      Modified slightly between r14 and r15