is a series, when I configure the tooltips, mouse hover to display data normally,
the effect I need,
such as a line chart, 10 points, I want to show 10 tooltips at the same time, when I click, hide a tips and then click to show, do not click, each point corresponds to tips is always open
you can try using the callback function, which by default shows all tooltip, tooltip that hides the data item when the mouse moves over it
should be configurable
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