Welcome to the Highcharts JS (highcharts) Options Reference

These pages outline the chart configuration options, and the methods and properties of Highcharts objects.

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Decides how the data label will be rotated relative to the perimeter of the sunburst. Valid values are circular, auto, parallel and perpendicular. When circular, the best fit will be computed for the point, so that the label is curved around the center when there is room for it, otherwise perpendicular. The legacy auto option works similar to circular, but instead of curving the labels they are tangent to the perimeter.

The rotation option takes precedence over rotationMode.