Apple LaserWriter 12/640 PS - Manual (Page 163)

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FinePrint Turns FinePrint on or off. FinePrint smoothes out lines and
curves and enhances text and line graphics that would normally appear
ragged. (However, to enhance the quality of images, you may want to turn
FinePrint off.)
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Tray Switch Turns tray switching on or off.
Job Control
Click the Job Control tab to display the Job Control tab dialog box, which
controls such options as when the PostScript header and the PostScript error
handler are sent to your printer.
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Printer Mode Lets you set up the printer to receive data in ASCII or
binary format.
163 Windows 3.1 and DOS Users