# 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.yAxis.crosshair

Configure a crosshair that follows either the mouse pointer or the hovered point.

Support boolean or object definition. If `true`, a crosshair with default settings will be displayed.

In styled mode, the crosshairs are styled in the `.highcharts-crosshair`, `.highcharts-crosshair-thin` or `.highcharts-xaxis-category` classes.