# 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.

# accessibility.highContrastMode

Controls how highContrastTheme is applied.

The default option is `auto`, which applies the high contrast theme the user's system has a high contrast theme active.