The Window Menu configures how the System Overview and Audio Partition Layouts are displayed in the application window and chooses which is active (in front). By default these items are tabbed in the window and clicking on the tab or selecting that tab from the Window menu brings it to the front. If Use Partition Tabs is unchecked, the System View and Audio Partitions become windows that can be Cascaded, Tiled Vertically or Horizontally.
In this mode an additional Windows menu item appears to manage the open windows.