=== Importing & Exporting Terrain Models ===
You can import two types of terrain in [[EM.Terrano]]. The first type is "'''.TRN"''' terrain file, which is [[EM.Terrano]]'s native terrain format. It is a basic digital elevation map with a very simple ASCII data file format. The resolution of the terrain map in the X and Y directions is specified in meters as STEPS. The (x, y, z) coordinates of the terrain points are then listed one point per line. The other type of terrain format supported by [[EM.Cube]] is the standard '''7.5min DEM''' file format with a '''.DEM''' file extension.
To import an external terrain model, first you have to create a terrain group node in the Navigation Tree. Right click on the name of the terrain group in the Navigation Tree and select either '''Import Terrain...''' or '''Import DEM File...''' A standard [[Windows]] '''Open Dialog''' opens up, with the file type set to .TRN or .DEM extensions, respectively. You can browse your folders and find the right terrain model file to import.
=== Moving Objects among Block Groups ===
You can move one or more selected objects at a time among different block groups. The objects can be selected either in the project workspace, or their names can be selected from the navigation tree. Right click on the highlighted selection and select '''Move To > Propagation >''' from the contextual menu. This opens up another sub-menu with a list of all the available block groups already defined in your [[EM.Terrano]] project. Select the desired block node, and all the selected objects will move to that block group. In the case of a multiple selection from the navigation tree using the keyboard's '''Shift Key''' or '''Ctrl Key''', make sure that you continue to hold the keyboard's '''Shift Key''' or '''Ctrl Key''' down while selecting the destination block group's name from the contextual menu.
In a similar way, you can move one or more objects from an EM.Terrano block group to one of [[EM.Cube]]'s other modules. In this case, the sub-[[menus]] of the '''Move To >''' item of the contextual menu will indicate all the [[EM.Cube]] modules that have valid groups for transfer of the selected objects. You can also move one or more objects from [[EM.Cube]]'s other modules to a block group in [[EM.Terrano]].
{{Note|Except for external terrain models, you can import other external objects (STEP, IGES, STL, etc.) only to '''[[CubeCAD]]'''. You need to move the imported objects form [[CubeCAD]] to [[EM.Terranpo]] Terrano as described above.}}
== Defining Sources & Observables ==