These pages outline the chart configuration options, and the methods and properties of Highcharts objects.
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Determines whether the series should look for the nearest point
in both dimensions or just the x-dimension when hovering the series.
'xy' for scatter series and
'x' for most other
series. If the data has duplicate x-values, it is recommended to
set this to
'xy' to allow hovering over all points.
Applies only to series types using nearest neighbor search (not direct hover) for tooltip.