# 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.

# plotOptions.xrange.sonification.contextTracks

Context tracks for this series. Context tracks are tracks that are not tied to data points.

Given as an array of instrument tracks, speech tracks, or a mix of both.