For modifying the chart at runtime. See the class reference.
These pages outline the chart configuration options, and the methods and properties of Highcharts objects.
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The plotOptions is a wrapper object for config objects for each series type. The config objects for each series can also be overridden for each series item as given in the series array.
Configuration options for the series are given in three levels. Options
for all series in a chart are given in the plotOptions.series object. Then options for all series of a specific
type are given in the plotOptions of that type, for example
plotOptions.line. Next, options for one single series are given in
the series array.