Help:Surveyor Paint Tools
From TrainzOnline
The Surveyor Paint Tools allows you to paint the baseboard with different textures to represent the ground, ballast, rocks etc. You have control over the texture, size, angle of rotation, scale and so on.
Select a texture from the tabbed window, then move over to the baseboard and mouse click, the texture will be placed there. Textures overwrite earlier ones placed.
Click on this tab to open and close the Tabbed pane.