Modality Mode – runs in scalable windows allowing the user to monitor whats going on in a window while working in the Mac environment.Window Mode – runs the operating system in a single window and works best for those who stay in the OS for long periods of time before switching back to Mac.Coherence Mode – runs each Windows app in a single Window as if they’re Mac apps and only works with Windows.Coherence Mode puts a Windows Start Menu button on the Mac Men Bar