Apple Color LaserWriter 12/600 PS - Manual (Page 146)

Advanced PostScript options
Choose the Advanced button in the PostScript tab dialog box to display the
Advanced PostScript Options dialog box.
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PostScript language level Lets you specify which level of PostScript language
to use.
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Bitmap compression Lets you specify whether to compress graphics before
sending your document to the printer. If you’re using PostScript language
level, click No Bitmap Compression.
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ASCII data Sends all data in Adobe Communication Protocol. ASCII data
format allows the file to print on any printer.
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Binary communications protocol Sends all data except special control
characters in binary (8-bit) format.
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Tagged binary communications protocol Sends all data except special
characters in binary (8-bit) format over serial or parallel ports.
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Pure binary data Sends all data in pure binary format. This option works
only on AppleTalk or Ethernet networks.
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Send CTRL+D before job Sends CTRL+D to the printer before a print job to
reset the printer.
132 Chapter 7