Determines which method to use when drawing surface plots.
An integer, the surface plot mode:
Waterfall, surface and mesh plots have two methods to be drawn. These are called the Painter's method (1) and Horizon method (0).
By default (-1), the plot method is chosen dynamically. In general, the Painter's method is selected except when sending output to a pen plotter.
By default, surfaces are drawn with cross hatches at each observation. The lines are drawn using the grid color and then filled using the data series color.