# 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.

# chart.zooming.singleTouch

Enables zooming by a single touch, in combination with chart.zooming.type. When enabled, two-finger pinch will still work as set up by [chart.zooming.pinchType] (#chart.zooming.pinchType). However, `singleTouch` will interfere with touch-dragging the chart to read the tooltip. And especially when vertical zooming is enabled, it will make it hard to scroll vertically on the page.