How to highlight points of multi series in same X value when mouse moves using highcharts? -

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considering official demo. when mouse moves somewhere on x axis, point in 1 of 4 series becomes highlight.

how highlight points in same x value series when mouse move?

if understand correctly, need "shared" option in tooltip, i.e.,

tooltip: { shared: true }

example

http://jsfiddle.net/bv05y6lg/


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