I've had a look at it now. It's a nice gadget, but image editing is not really my thing.
I prefer to stick to creating POIs.
I can create them the way I want, with everything that is possible, and for almost every navigation system. No matter what format the source material is in.
Here are a few examples of what's possible.

Spoiler: KML
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Spoiler: GPX
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Spoiler: OSM for OsmAnd
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Spoiler: CSV
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