For the sake of education of anyone who doesn't know, this works because you can link to an ID anywhere on the page
<section id="contents">blah blah blah</section>
<section id="essay">blah blah blah</section>
<section id="footnotes">blah blah blah</section>
When you submit a form, even if you submit it to itself, the URL set in the form's
element is loaded. This causes the top of the page to be shown.