On the help file the section for make terrain is >
MAKE TERRAIN
This command will create a new terrain object using the specified Heightmap file. A
heightmap file is a simple image file that contains a greyscale representation of the
landscape heights. The image file must contain an image with identical width and
height, and ideally be a resolution equal or greater than 256 colours. Additional
parameters control the size and detail of the terrain.
SYNTAX
MAKE TERRAIN Terrain Number, Heightmap Filename
anyone have any idea of the correct format of these additional parameters ??