Editing Courses/EPUB/day1 (section)

=== XML requirements ===
As content document are HTML with added XML they obey the stricter XML rules:
* every element has an opening and closing tag.
* Empty tags such as <br> must be self-closing: '''<br/>'''
* Elements and attribute names are case-sensitive and always lowercase.
* Namespaces must be declared (for embedded MathML, SVG, EPUB elements and attributes, etc.).
* Ampersands (&) must be escaped as &amp;.

Example of a content document:
<source lang="xml">
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml" xmlns:epub="http://www.idpf.org/2007/ops">
  <head>
    <meta charset="utf-8" />
    <meta content="pandoc" name="generator" />
    <title>Acknowledgments</title>
    <link href="stylesheet.css" rel="stylesheet" type="text/css" />
  </head>
  <body>
    <section class="level1" epub:type="acknowledgments frontmatter" id="acknowledgments">
      <h1>Acknowledgments</h1>
      <p>In fall 2012, as part of my graduate studies, I began studying Instagram user self-portraits. The users whose images I discuss in this notebook may or may not have knowledge that I critiqued their selfies, as I did not interview users about their images. My study is assumptive, and my work is influenced by the research of Marshall McLuhan and Vilém Flusser. Thank you to the users who kindly gave me permission to republish their images.</p>
    </section>
  </body>
</html>
</source>