<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>Navigation API</title>
  <script>
    function goforward() {
      if (navigation.canGoForward) {
        navigation.forward();
      }
    }
  </script>
</head>
<body>
  <section>
    <h1>Main Page</h1>
    <a href="help.html">Open Help</a><br><br>
    <button type="button" onclick="goforward()">Go to the next page</button>
  </section>
</body>
</html>