Culture is visual-simulation terminology for all the things that appear on the terrain - including buildings, roads, and vegetation. Enviro provides a number of ways of loading culture objects, interacting with them, and in some cases creating, editing and saving them.
Roads
Roads are loaded at the point a terrain is loaded. You can tell Enviro which file contains your Road data in the Terrain Parameters dialog. You can view, but cannot (yet) interact with Road data.
Vegetation
Vegetation (plants) are loaded at the point a terrain is loaded, or at runtime. You can tell Enviro which file contains your Vegetation data in the Terrain Parameters dialog.
Creating - You can create plants using the Plants Dialog. Menu command is "Tools: Plants", or the toolbar button that looks like a tree. Use the dialog to select what kind of plant you want, then click on the terrain to create the plant.
Editing - To edit existing plants, use the Select tool (Menu "Tools: Select"). Click to select the plant with the 3D cursor. Right-click and select "Properties". This will open the Plants Dialog to edit the properties of the selected plant.
Moving - Select the plant with the Select Tool, then drag to move it on the terrain.
Deleting - Select the plant with the Select Tool, then right-click and select "Delete."
Saving - Menu command is "Terrain: Save Vegetation As..."
Structures
Structures (buildings, linears structures and 3D model instances) that are in the terrain definition are loaded at the point the terrain is loaded. You can tell Enviro which file(s) contain your Structure data in the Terrain Parameters dialog. At runtime in Terrain View, you can use the Layers Dialog to display your structure layers, and change the active layer. Editing in the 3D View such as creating structures will affect the active structure layer.
Creating - Instance and Linear Structures (fences) can be created dynamically. Use the "Tools: Instances" and "Tools: Fences" modes respectively to open the properties dialog, then click on the terrain to create the structure.
Editing - Buildings and fences can be edited. Use the Select tool (Menu "Tools: Select"). Click to select the structure with the 3D cursor. Right-click and select "Properties". This will open the Building Dialog or Linear Structure Dialog to edit the properties of what you have selected.
Moving and Rotating - Structures can be moved. Select the structure with the Select Tool, then drag to move it on the terrain. Linear Structures can have each of their points moved. Instances can also be rotated: hold down the Shift key when moving the object, and it will rotate.
Deleting - Structures can be deleted. Select the structure with the Select Tool, then right-click for the popup menu and select "Delete."
Saving - Use the Layers Dialog. Highlight the structure layer you want to save, then use the "Save" or "Save As" buttons.