In Harlowe, HTML tags (like ''%%<img>%%'') and HTML elements (like ''%%&sect;%%'') can be inserted
straight into your passage text. They are treated very naively - they essentially pass through Harlowe's
markup-to-HTML conversion process untouched.

=== Example usage: ===

<code>
<mark>This is marked text.

&para; So is this.

And this.</mark>
</code>
=== Details: ===

HTML elements included in this manner are given a ''%%data-raw%%'' attribute by Harlowe, to distinguish them
from elements created via markup.

You can include a ''%%<script>%%'' tag in your passage to run Javascript code. The code will run as soon as the
containing passage code is rendered.

You can also include a ''%%<style>%%'' tag containing CSS code. The CSS should affect the entire page
until the element is removed from the DOM.

Finally, you can also include HTML comments ''%%<!-- Comment -->%%'' in your code, if you wish to leave
reminder messages or explanations about the passage's code to yourself.