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<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <title>Example of HTML headings tag</title> </head> <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>