Changes

In [[EM.Cube]]'s other modules, material types are specified under the "Physical Structure" section of the Navigation Tree, and sources are organized under a separate "Sources" section. In those modules, the physical structure and its various material types typically represent all the CAD objects you draw in your project. Sources are virtual entities that might be associated with certain physical objects.  In [[EM.Cube]]'s Static Module, materials and sources are all listed under provide the "Physical Structure" section excitation of the Navigation Tree, and there is no separate "Sources" section. For example, you can define default zero-potential perfect electric conductors (PEC) or fixed-potential PEC objects with a nonzero voltage, which can effectively act as a voltage source for your projectboundary value problem.