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    <h2>Contents</h2>
    <ul class="nav nav-pills nav-stacked">
      <li><a href="#section-package-description">Package description</a></li>
      <li><a href="#section-test-execution">Test execution</a></li>
      <li><a href="#section-writing-r-data-to-xml">Writing R data to xml</a></li>
      <li><a href="#section-reading-xml-to-r">Reading XML to R</a></li>
      <li><a href="#section-writing-a-test-case">Writing a test case</a></li>
      <li><a href="#