Contour lines not showing on a surface

This may be caused by Level of Detail, which decimates the rendered surface to increase performance of Civil 3D.

Enter the LEVELOFDETAILOFF command to disable it.

Level of Detail can be re-enabled with the LEVELOFDETAIL command.

Note: This doesn’t actually affect the surface, just how it is displayed in Civil 3D itself.

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Cannot add lines to a surface

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Properties palette missing information