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    <div class="mySeryTitle">Step by step</div>
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    <p>It is important to note that 2 different <u>input formats</u> can be used to build a treemap:
      <ul>
        <li>A <code>.csv</code> file with one line per connection in the hierarchy. See <a href="graph/treemap_basic.html">here</a>.</li>
        <li>A <code>.json</code> file. See <a