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SET_3D()                                                            G_EXAM47
   Sets a flag that turns 2-D X,Y charts into 3-D.

   Syntax
         SET_3D(nRotation [,nElevation] [,nDistance] [,nBorderColor]
                [,nDitherYesNo])

   Arguments
         nRotation     Rotation of the graph around the Y axis. (-180 to 180)
         OPTIONAL PARAMETERS
         nElevation    Angle looking down on to the graph. (0-90)
         nDistance     Distance from the object. (default 10,000)
         nBorderColor  Border color for polygons.
         nDitherYesNo  Solid colors dithered for black and white output.

   Returns
         None

   Description
         SET_3D() sets parameters for making X,Y charts 3-D.

         nRotation is the spin of the graph. A rotation of 80 degrees would
         turn the image toward the right side of the graph, while a -80
         degrees would rotate it in the opposite direction. If the nRotation
         is set to 0, the chart will be drawn in 2-D.

         nElevation increases the height at which you look at the graph. 90
         degrees is looking straight down on the graph.

         nDistance is how far away you are from the graph. The default is
         usually ok.

         nBorderColor is the color of the edge of the polygons that make up
         the 3-D image.

         nDitherYesNo sets if solid colors will be dithered so they appear as
         shades of gray on a black and white output.