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Modeling
About Archicad's design tools, element connections, modeling concepts, etc.
The pen is determined by the Fill Pen in the element's Floor Plan and Section settings. For instance, under typical circumstances, in the Wall tool you would set the Cut Fill Pen in the Wall Settings/Floor Plan and Section/Cut Surfaces.
In order for the grey to appear as black fill, I need find what pen number is being used for that elements fill, then change that pen number in the pen sets right?