[messages] [Technical Support & Bugs] Place marker at mouse coordinates

[GeoMan]

I have a Piece with the Action and Place Marker traits in place, so when
i click on it, a marker is placed on top of it.

My question is: how can i place the marker at the exact point i clicked?

Thanks!

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http://www.vassalengine.org/forum/viewtopic.php?p=38115#p38115