One is to increase the number of segments, making each one very short. This technique results in a minimal shortening effect and can yield accurate quad models. A second technique is called segment length tapering. In both cases, segments approaching critical angles become very short and gradually increase in length. The technique yields maximum accuracy with a minimum number of segments per wire.
Memory is the key limitation in the maximum number of segments available for a model.
At one time, a maximum of about 128 pulses was standard. However, existing programs have increased this limit by various means. AO has altered the code with machine-level routines so that the number of pulses is limited only by memory. NEC4WIN uses coding within the Windows 95 protocols to remove the limit from the number of available pulses. Very large and complex geometries may call for considerable ingenuity.