# Welcome to the Highcharts Gantt JS (gantt) Options Reference

These pages outline the chart configuration options, and the methods and properties of Highcharts objects.

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# exporting.menuItemDefinitions

An object consisting of definitions for the menu items in the context menu. Each key value pair has a `key` that is referenced in the menuItems setting, and a `value`, which is an object with the following properties:

- onclick: The click handler for the menu item

- text: The text for the menu item

- textKey: If internationalization is required, the key to a language string

Custom text for the "exitFullScreen" can be set only in lang options (it is not a separate button).