there I have the ability the cordinates of cusror (the position of the mouse) to get a number format in the window of algebra
It seems that there is no mouse-over-effect possible. But you can move a point around, that shows the coordinates.
Maybe by making a custom tool:http://www.geogebra.org/en/...
alternatively, a free point or circle which can be draged by user, set the label of point to "Value".
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