This download is the 'Tile Map Editor' (Version 3), in which you  can view the heights of the tiles on a 3d mesh.

Created by Will Gee - Col. Gibbon

Latest update:

It works as follows (note that height values range from 0 to 65535).
 
Left click lowers, right click raises by 10 units.
 
If you hold CTRL while clicking, it moves it by 100 units
 
If you hold SHIFT, it moves it by 1 unit.
