The main window shows a 3D cube, which can be viewed from different directions and angles.
As usual, the various sub-menus are opened and selected with the left mouse button.The most commonly used sub-menus are "Load" and "Save" to load existing or to save generated simulations as well as the sub-menus under the main menu "Window". The latter provides access to 4 different windows with a broad spectrum of possibilities to enter or set parameters.