# 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.

# annotations

A collection of annotations to add to the chart. The basic annotation allows adding custom labels or shapes. The items can be tied to points, axis coordinates or chart pixel coordinates.

General options for all annotations can be set using the `Highcharts.setOptions` function. In this case only single objects are supported, because it alters the defaults for all items. For initialization in the chart constructors however, arrays of annotations are supported.

See more in the general docs.