These pages outline the chart configuration options, and the methods and properties of Highcharts objects.
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Highcharts v11.2.0 and older. An object containing additional key value
data for the POST form that sends the SVG to the export server. For
example, a target can be set to make sure the generated image is
received in another frame, or a custom enctype or encoding can be
set.
With Highcharts v11.3.0, the fetch API replaced the old HTML form. To
modify the request, now use fetchOptions
instead.