how to remove isolines of a extruded surface

below given the auto cad.dwg file in which there is an extruded surface i want to remove the isolines of the surface either 1 ,2 ,3 or as u wish the isolines are visible in 2D and 3D wireframes

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1 Answer

isolines enter the number you want. 0 for none.
If you want to show the silhouette. Type
dispsilh 1
To make the model smoother. Type
facetres Any number up to 10 (.5 is the default)
Type regen to see the result.

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