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

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

Feel free to search this API through the search bar or the navigation tree in the sidebar.

# navigator.series.dataLabels.overflow

How to handle data labels that flow outside the plot area. The default is `"justify"`, which aligns them inside the plot area. For columns and bars, this means it will be moved inside the bar. To display data labels outside the plot area, set `crop` to `false` and `overflow` to `"allow"`.