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<head><title>[Golang] Extract Footnote via State Machine</title></head>
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<p>I am paragraph #1</p>
<p>I am paragraph #2</p>
<p>I am paragraph #3</p>
<p>I am paragraph #4</p>
<hr>
<div>Reference:</div>
<div>[1] I am footnote #1</div>
<div>[2] I am footnote #2</div>
<div>[3] I am footnote #3</div>
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<p>Updated: 2016-04-11</p>
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