A servo drive for the set ring of a louver for a motor vehicle has a self-locking gear motor, the output shaft of which is coupled with a control crank. The object-oriented software development support apparatus according to the present invention applies a pattern according to an entered pattern architecture, thereby enabling the pattern to be appropriately and efficiently reused, and efficiently supporting the development of software. Further, a plurality of ink channels include first ink channels in communication with the larger-diameter nozzles and second ink channels in communication with the smaller-diameter nozzles. Alternatively, the optical amplifier can be used in a Mach-Zehnder wavelength converter for broadband wavelength conversion. The AMS 100 tracks different avails including duration and bandwidth of the avail, and uses a number of schemes to determine if the ad can be placed in the avail.