# Welcome to the Highcharts Gantt JS (gantt) Options Reference

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

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# series.gantt.tooltip.position.relativeTo

What the fixed tooltip alignment should be relative to.

The default, `pane`, means that it is aligned within the plot area for that given series. If the tooltip is split (as default in Stock charts), each partial tooltip is aligned within the series' pane.