Highcharts change symbol and hover text of individual points Line Chart -

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in reference example: http://www.highcharts.com/demo/spline-irregular-time

how 1 change symbols individual points , put custom hover on text each individual point, when our series structured in example? thanks!

solved using this code.

var chart = new highcharts.chart({ chart: {     renderto: 'container',     defaultseriestype: 'line' }, series: [{     data: [{x:1.0,y:209.9,marker: {symbol: 'url(http://www.highcharts.com/demo/gfx/sun.png)'}}, {x:4.0,y:71.5}] }] });

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