Open the Spck Editor app, Open the new file and enter code <!DOCTYPE html> <html> <body>  <h1>Heading 1</h1> <h2>Heading 2</h2> <h3>Heading 3</h3> <h4>Heading 4</h4> <h5>Heading 5</h5> <h6>Heading 6</h6>  </body> </html> and Name the file Headline.txt