# 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.landmarkVerbosity

Amount of landmarks/regions to create for screen reader users. More landmarks can make navigation with screen readers easier, but can be distracting if there are lots of charts on the page. Three modes are available:

- `all`: Adds regions for all series, legend, information region.
- `one`: Adds a single landmark per chart.
- `disabled`: No landmarks are added.