# 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.

# legend.symbolRadius

The border radius of the symbol for series types that use a rectangle in the legend. Defaults to half the `symbolHeight`, effectively creating a circle.

For color axis scales, it defaults to 3.