extern ULONG do_check( struct Hook *, void *, APTR );
extern ULONG do_init( struct Hook *, void *, APTR );
extern ULONG do_load( struct Hook *, void *, APTR );
extern ULONG do_help( struct Hook *, void *, APTR );
extern ULONG do_info( struct Hook *, void *, APTR );