=== Navigation Tree ===
When you start the [[EM.Cube]] application, it lands you first in CubeCAD by default. The Module Bar located on the left edge of the screen is used to switch among CubeCAD and [[EM.Cube]]'s various computational modules. It consists of eight buttons for : *[[Building_Geometrical_Constructions_in_CubeCAD | CubeCAD, ]]*[[EM.Tempo]], *[[EM.Terrano]], *[[EM.Illumina]], *[[EM.Ferma]], *[[EM.Picasso]], *[[EM.Libera]] and *[[RF.Spice A/D]]. Clicking on each of the first seven buttons of Module Bar module bar changes the view to the selected module. Clicking on the [[RF.Spice A/D]] button, opens the [[RF.Spice A/D]] application if you have a valid license of that application.
The Navigation Tree provides all the details of an entire [[EM.Cube]] project. These include the CAD objects and geometric models, material assignments, computational domain and boundary conditions, mesh structure, source information, observable definitions, etc. Besides the menu bar and toolbars, the navigation tree serves as another place from which you can modify most items in your project. Similar to toolbar, you can undock, move around or hide the Module Bar and Navigation Tree.