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This page lets you customize your personal settings for this site. These settings are stored on the server and are identified by a session key stored in a browser cookie. That cookie allows your settings to be restored on subsequent visits.

The Pygments syntax highlighter can be used with different coloring themes.

Preview: 
<!DOCTYPE html>
<html lang="en">
  <head>
    <title>Hello, world!</title>
    <script>
      jQuery(document).ready(function($) {
        $("h1").fadeIn("slow");
      });
    </script>
  </head>
  <body>
    <h1>Hello, world!</h1>
  </body>
</html>