# 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.handles.symbols

Array to define shapes of handles. 0-index for left, 1-index for right.

Additionally, the URL to a graphic can be given on this form: `url(graphic.png)`. Note that for the image to be applied to exported charts, its URL needs to be accessible by the export server.

Custom callbacks for symbol path generation can also be added to `Highcharts.SVGRenderer.prototype.symbols`. The callback is then used by its method name, as shown in the demo.