How to enable marking in JsViz Sankey chart

Using the Sankey chart example that comes with JsViz the ability to mark or drill through is not enabled.  On this wiki page

Dave Leigh says "The Sankey sample does not have Marking implemented.  Each implementation of Marking is specific to the visualization and how the customer wants to use it."

Can someone please expand on this answer, would really love to be able to use markings inside this visual.


Thank you and best regards

(2) Answers