We don’t support a Gan Fan technical tool out of the box, but we do have a rich & powerful Annotations API which lets you place any UIElement over the chart.
You can template a BoxAnnotation and provide any UI you want. For instance, I recommend either subclassing and/or templating BoxAnnotation and providing your own UserControl which overrides OnRender to draw the lines/labels you want.
Once you’ve done that you can place annotations on your chart via two mouse-clicks by using the AnnotationCreationModifier.
Hope this helps!
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