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<notebook theme="air">
  <title>Hierarchical edge bundling</title>
  <script id="2" type="text/markdown">
    # Hierarchical edge bundling

    This chart shows relationships among classes in a software hierarchy. Hover a class to reveal its imports (<b style="color: ${colorout};">outgoing</b> edges) and classes that import it (<b style="color: ${colorin};">incoming</b> edges).
  </script>
  <script id="1" type="module" pinned="">
    const colorin = d3.schemeRdBu[4][3];
    const colorout =