A computer-implemented method of determining an attribute of a circuit includes using a computationally expensive technique to simulate the attribute of a portion of the circuit, at predetermined values of various parameters, to obtain at least a first value of the attribute. Zone group permission tables of a SAS domain may have associated version identifiers, indicating a version of the zone group permission table. The memory device, while being too small to store all of the print data for the full image, is capable of storing the print data associated with each region. An intermediate seal member is provided below the pump chamber and also effectuates a seal with the shaft.