windows-xp/Source/XPSP1/NT/admin/services/sysmgmt.def

// This is included at the top of all systems management .def files

#if     !defined( _X86_ )
#define	SYMBOL( name, argbytes ) name
#define	SYN( name, argbytes )
#define PRIVATESYN( name, argbytes )

#else

#define	SYMBOL( name, argbytes ) _ ## name ## @ ## argbytes 
#define	SYN( name, argbytes ) name = SYMBOL( name, argbytes )

#define PRIVATESYN( name, argbytes ) SYN( name, argbytes ) PRIVATE

#endif


#define PRIVATESYMBOL( name, argbytes ) SYMBOL( name, argbytes ) PRIVATE