namespace System.Reflection.PortableExecutable { public enum Subsystem : ushort { Unknown = 0, Native = 1, WindowsGui = 2, WindowsCui = 3, OS2Cui = 5, PosixCui = 7, NativeWindows = 8, WindowsCEGui = 9, EfiApplication = 10, EfiBootServiceDriver = 11, EfiRuntimeDriver = 12, EfiRom = 13, Xbox = 14 } }