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:
*'''[[Building_Geometrical_Constructions_in_CubeCAD | CubeCAD]]''': TEM[[EM.Cube]]'s 3D CAD modeling environment
*'''[[EM.Tempo]]''': [[EM.Cube]]'s [[FDTD Module|FDTD module]]
*'''[[EM.Terrano]]''': [[EM.Cube]]'s [[Propagation Module|propagation module]]