dio_tuner([logging.i4.r] [,read_timeout.i4.r] [,set_timeout.i4.r]
		  [,dbm_timeout.i4.r] [,stale_notify.i4.r]

	dio_tuner_c([logging.i4.v] [,read_timeout.i4.v] [,set_timeout.i4.v]
		    [,dbm_timeout.i4.v] [,stale_notify.i4.v]

	This routine sets parameters used globally by DIO routines.  If this
	routine is called with no arguments, it serves as a DIO initialization.
	If a value of CLIB_DEFAULT_ARG is passed for any argument, the
	corresponding parameter will remain unchanged.

	[logging]	error logging flag
			(TRUE -> log DIO errors (Could happen at 15 Hz !),
			 FALSE -> don't log DIO errors (default))
	[read_timeout]	number of seconds to wait for reading requests
			(default is 2 seconds)
	[set_timeout]	number of seconds to wait for setting requests
			(default is 4 seconds)
	[dbm_timeout]	number of seconds to wait for database requests
			(default is 10 seconds)
	[stale_notify]	stale data notification flag
			(TRUE -> return a value of DIO_STALE for stale data
				 requests (default),
			 FALSE -> return a value of OK for stale data)
	[cache_delete]	automatic cache deletion flag
			(TRUE -> delete the DIO cached information for any
				 device whose database information is
				 modified using DABBEL,
			 FALSE -> ignore database modifications (default))

	This function requires the following include files:

	cnsparam_h, diolib_h

	Related functions:

	dio_query_tuner, dio_read_db_timeout, dio_dbquery_c

	C/C++ usage:

	int	logging = FALSE;
	int	read_timeout = 2;
	int	set_timeout = 4;
	int	dbm_timeout = 10;
	int	stale_notify = TRUE;
	int	cache_delete = TRUE;