I have line chart with the tooltip shared as true.  The default tooltip is great.  The first line is the value of the x-axis and the rest of the lines are each key name in the key color and the y value.  Again perfect.  All I want to do is have first line, the x-axis value, be in a html link.  I realize I can use the contentFormatter, but I don’t know how to get the exact content and format of the default tooltip.  I hope this makes sense.  Any help appreciated. Dave