# 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.

# series.xrange.tooltip.followTouchMove

Whether the tooltip should update as the finger moves on a touch device. If this is `true` and chart.panning is set,`followTouchMove` will take over one-finger touches, so the user needs to use two fingers for zooming and panning.

Note the difference to followPointer that only defines the position of the tooltip. If `followPointer` is false in for example a column series, the tooltip will show above or below the column, but as `followTouchMove` is true, the tooltip will jump from column to column as the user swipes across the plot area.