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<!DOCTYPE html>
<html>
<body>

<h1>External JavaScript</h1>

<p id="demo">A Paragraph.</p>

<button type="button" onclick="myFunction()">Try it</button>

<p><strong>Note:</strong> myFunction is stored in an external file called "myScript.js".</p>

<script src="myScript.js"></script>

</body>
</html>