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<html><body><h1>The Document Object</h1><h2>The open() and close() Methods</h2><p>Click "Open" to open this document, write some text to it and close it:</p><button onclick="myFunction()">Open</button><script>function myFunction() { document.open(); document.write("<h1>Hello World</h1>"); document.write("<p>Open a document owerwrites the original content.</p>"); document.close();}</script></body></html>