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<html><body><h1>The Document Object</h1><h2>The open() and close() Methods</h2><p>Click "Open" to open a document in a new window, write some text to it and close it:</p><button onclick="myFunction()">Try it</button><script>function myFunction() { const myWindow = window.open(); myWindow.document.open(); myWindow.document.write("<h1>Hello World!</h1>"); myWindow.document.close();}</script></body></html>