Once a mesh is generated, it stays in the memory until the structure is changed or the mesh density or other settings are modified. Every time you view mesh, the one in the memory is displayed. You can force [[EM.Cube]] to create a new mesh from the ground up by selecting the menu item '''Simulate → Discretization → Regenerate Mesh''' or by right clicking on the '''Mesh''' item in the "Discretization" section of the navigation tree and selecting '''Regenerate''' from the contextual menu.
To customizing customize the mesh of your physical structure or change some of the mesh settings in each [[EM.Cube]] module, follow the steps below:
# Click the '''Mesh Settings''' [[File:mesh_settings.png]] button of the Simulate Toolbar.
# By default, the lumped source is placed at the midpoint of the host line object. You can modify the '''Offset''' parameter, which is measured from the start point of the line and is always positive.
# Click the OK button of the dialog to return to the project workspace.
You can change the mesh algorithm from the dropdown list labeled '''Mesh Type''' if there is more than one option. You can also enter a different value for '''Mesh Density''' in cells per effective wavelength (λ<sub>eff</sub>). For each value of mesh density, the dialog also shows the average "Cell Edge Length" in the free space.
== General Rules of EM.Cube's Surface Mesh Generators ==