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