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 legend is a box containing a symbol and name for each series item or point item in the chart. Each series (or points in case of pie charts) is represented by a symbol and its name in the legend.
It is possible to override the symbol creator function and create custom legend symbols.
A Highmaps legend by default contains one legend item per series, but if
colorAxis is defined, the axis will be displayed in the legend.
Either as a gradient, or as multiple legend items for