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.Cube's 3D CAD modeling environment*'''[[EM.Tempo]]''': [[EM.Cube]]'s [[FDTD Module|FDTD module]]*'''[[EM.Terrano]]''': [[EM.Cube]]'s [[Propagation Module|propagation module]]*'''[[EM.Illumina]]''': [[EM.Cube]]'s [[Physical Optics Module|physical optics module]]*'''[[EM.Ferma]]''': [[EM.Cube]]'s static module*'''[[EM.Picasso]]''': [[EM.Cube]]'s [[Planar Module|planar module]]*'''[[EM.Libera]]''': [[EM.Cube]]'s 3D MoM module*'''[[RF.Spice A/D]]''': This is a separate stand-alone application that can be used together with [[EM.Cube]]
Clicking on each of the first seven buttons of 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.