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RANDOM_MAP /EXTRAPOLATE 

        [GREG2\]RANDOM_MAP /EXTRAPOLATE

    Control whether extrapolation outside the convex hull of  the  triangles
    is  to  be  done or not. The default is not, i.e. the command fills with
    the blanking value the exterior of the convex hull. Beware that extrapo-
    lation is always hazardous.