title: How to remove the purple "duplicated code fragment" highlighting in PhpStorm?
body: <p>I just clicked "<em>Show all duplicates like this</em>" in the "<em>Duplicated code fragment</em>" context menu:</p>
  
  <p><a href="https://i.stack.imgur.com/HZavr.png" rel="noreferrer"><img src="https://i.stack.imgur.com/HZavr.png" alt="Duplicated code fragment"></a></p>
  
  <p>Now the duplicated code is permanently highlighted with a purple background, even if I close the "Duplicates" toolbar at the bottom of the IDE.</p>
  
  <p><strong>How do I remove this highlighting?</strong> </p>