Summary: (Not implemented) Navigation works in terms of applications not windows
If true, then the WM works in terms of applications rather than windows. The concept is a bit abstract, but in general an application-based setup is more like the Mac and less like Windows. When you focus a window in application-based mode, all the windows in the application will be raised. Also, in application-based mode, focus clicks are not passed through to windows in other applications. Application-based mode is, however, largely unimplemented at the moment.