Apple Color LaserWriter 12/600 PS - Manual (Page 118)

Additional printer options
In addition to the Paper tab, other tabs display settings for
m PostScript
m Fonts
m Features
m Job control
m Watermark
PostScript
Click the PostScript tab to display the PostScript tab dialog box, which
controls color printing, the communication protocol, and PostScript
Level 2 features.
m
Use PostScript Level 2 features Tells the driver to use PostScript Level 2
features when printing documents. Use the Level 2 features to
speed printing.
104 Chapter 6