Regular Expressions 101

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Regular Expression

Test String
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<body>
  <H1>Welcome to my Homepage</H1>
  Content is divided into two sections:<br/>
  <h2>SQL</h2>
  Information about SQL.
  <h2>RegEx</h2>
  Information about Regular Expressions.
  <h3>This is not a valid HTML</h4>
</body>

Extraction
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