nav__link">Content</a>
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        <li class="md-nav__item"><a href="#running-this-tutorial-from-a-notebook" class="md-nav__link">Running this tutorial from a notebook</a>
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        <li class="md-nav__item"><a href="#running-this-tutorial-from-the-command-line" class="md-nav__link">Running this tutorial from the command-line</a>
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        <li class="md-nav__item"><a href="#required-hardware" class="md-nav__link">Required Hardware</a>
  