Corresponding System Variable: None.

A skirt around the array at a given z value is drawn if this keyword parameter is present. The z value is expressed in data units.

For example:

SURFACE, A, Skirt = 100

draws the surface of A with a skirt at the Z value 100.

If the skirt is drawn, each point on the four edges of the surface is connected to a point on the skirt which has the given z value, and the same x and y values as the edge point. In addition, each point on the skirt is connected to its neighbor.