| Name | Format | Duration | Size | Date | |
|---|---|---|---|---|---|
| OPANIL01.WAV | Waveform Audio File Format | 0.03s | 2KB | 1997-02-10 | |
| OPRINT01.WAV | Waveform Audio File Format | 0.04s | 3KB | 1997-02-10 | |
| OPROLA01.WAV | Waveform Audio File Format | 0.04s | 3KB | 1997-02-16 | |
| OPVOL01.WAV | Waveform Audio File Format | 1s | 13KB | 1997-02-15 |