status.i4.v = dio_can_set(device_index.i4.r, property.i2.r
				  [,length.i2.r] [,offset.i2.r])

	status.i4.v = dio_can_set_c(device_index.i4.v, property.i4.v
				    [,length.i4.v] [,offset.i4.v])

	This routine cancels a single device setting entry created
	by a previous call to dio_set_dev(_c) or dio_set_raw(_c).

	device_index	device index
	property	property index (constants are in 'dbprops')
	[length]	data length in bytes (default is 0 (NULL))
	[offset]	data offset in bytes (default is 0 (NULL))

	This function returns ACNET status values as follows:

	OK			success
	DIO_CANFAIL		entry not found
	DIO_UNAVAIL		not valid in this context (MIO in use)

	This function requires the following include files:

	dbprops_h, diolib_h, acnet_errors_h

	Related functions:

	dio_set_dev(_c), dio_set_raw(_c), dio_can_set_lst,
	dio_cancel_set_array_c, dio_delete_requests_c, dio_flush

	C/C++ usage:

	int	status;
	int	device_index = 14430;
	int	property = PRSET;
	int	length = 0;
	int	offset = 0;

	status = dio_can_set_c(device_index,property,length,offset);