Clamp allows you to control the height of the terrain. You can use it to squash the terrain, clip it at certain heights, or make it taller using the Extend operation.
|Min||The minimum altitude.|
|Max||The maximum altitude.|
|Clamp : The terrain is proportionally reduced in height.|
|Clip : The terrain is clipped beyond the extents provided.|
|Extend : The terrain is sharply extended beyond the extents provided.|