Visiblox, WPF: Display labeled markers in a chart - wpf

is there a way to add some markers, like points or vertical lines with text labels to a visiblox chart?
Cheers,
Lutz

The premium version of Visiblox supports the concept of annotations; elements which are anchored to values on your X and/or Y axes. The Visiblox API supports the following annotations out-of-the-box:
Ellipse / circle
Rectangle / square
Lines (horizontal, vertical, point-to-point)
Text labels
Text labels anchored to datapoints (callout)
Annotations can be placed on the chart programmatically, and thereafter can be moved by the user via 'grippers'.
For a good idea of what is easily possible, see the following demo application:
http://www.visiblox.com/examples/Hindsight

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Could anyone think of a work around? maybe hiding both axes and then creating a blank chart with the date values and using that as the x axis ticks.
One workaround is to draw a Shape or line over the axis and set it to a colour that blends in with the background, (although in the case above, it would cut into the first data point and data label) using Shift + movement keys for precision placement.
Google Data Studio Report as well as a GIF to elaborate:

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I couldn't find any properties providing this behavior. Any ideas?
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Hope this explains my requirements.
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