The present invention proposes a printing system whereby a supply of sufficient data is assured to the print engine so that the print engine can run continuously and efficiently. The method begins by assigning a sound characteristic to a debugger event occurring within a software program under debug. The widths of the first andor last pulses of the write pulse waveform are varied in accordance with the magnitude of the present mark of input NRZI data and the magnitude of the leading andor trailing spaces, thereby minimizing jitter to enhance system reliability and performance. 85 away from an interior area defined by the U-shaped arc. The adsorption element has an exterior circumferential side facing away from the interior and delimiting together with the inner wall of the chamber section a bypass chamber surrounding the absorption element outwardly. A pair of handle elements adapted to be received wholly within the pair of recesses in the sidewall, each of the handle elements including at least one socket engaging portion received in the at least one socket portion of one of the recesses.