might be different choices for each node, so the initialization would be above, where the Info's are created.
    // But for this application, it makes sense to share the initialization code based on tree level.
    for (var i = 0; i < nodeDataArray.length; i++) {
      var d = nodeDataArray[i];
      if (d.key === 'Start') {
        d.category = 'decision';
        d.a = 'I';
        d.aText = 'Introversion';
        d.aToolTip =
          'The Introvert is “territorial” and desires space and solitude 