Help:Surveyor Topology Height Use
From TrainzOnline
Use height (H)
Click on Use Height (Hotkey 'H') then Click LMB to apply the selected Height Value to the terrain. The Use Height tool creates a plateau at your selected height and the radius of your cursor circle determines the amount of land that is leveled at one time.
Click LMB+H then move your mouse around the terrain to level out a broader section.
This tool is not affected by the sensitivity dial.
