Convert 3D to 2D

Converts a selection set of Lines, 3DFaces, 3DPolys or Splines to their 2D equivalent.

Keyboard Command: Cnv3do2do

Procedure:

1. Select Lines, 3DFaces, 3DPolys or Splines to convert.
2. Enter new elevation for objects, the default is 0.0.
3. Designate whether to use the elevations of the first vertex for the elevation of converted 3D polylines. This is useful in correcting bad conversions such as having contour lines as 3D polylines, they will be converted to 2D polylines with the proper elevation. All other objects take on the elevation designated above. 2D polylines are ignored.