In general, multiple designs can be open and loaded in the SCE application. The design windows for all currently opened and loaded designs are shown in the Workspace. Within the Workspace, design windows can be minimized, maximized, resized and closed freely via their title bar, title bar icons and handles on their window frames. Closing a design window closes the corresponding design (file).
At any time, there is exactly one active design window in the Workspace. The active window is the one that has the input focus and it is visualized by highlighting its title bar. Unless otherwise noted, all menu, toolbar or other commands apply to the currently active design window. Clicking into a design window activates the corresponding window and raises it to the front of the Workspace. A newly opened design windows automatically becomes the active window.