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From: henry@angel.Eng.Sun.COM (Henry McGilton)
Newsgroups: comp.lang.postscript
Subject: Re: Postscript printing small and mirrorimaged!!
Summary: Control-D Is A Protocol
Message-ID: <5288@exodus.Eng.Sun.COM>
Date: 4 Jan 91 22:32:11 GMT
References: <7699@hub.ucsb.edu> <371@rusux1.rus.uni-stuttgart.de> <1991Jan04.173636.9674@cpqhou.uucp>
Sender: news@exodus.Eng.Sun.COM
Lines: 32

In article <1991Jan04.173636.9674@cpqhou.uucp>,
    pipkinsj@cpqhou.uucp (Jeff Pipkins @Adv Dev@SE hou ) writes:

    ***  Just send a control-D (ASCII 04) to the printer to reset it after
    ***  running CorelDraw.  You can use the DOS echo command "echo
    ***  ^D>lpt1" (of course, the ^D is what DOS displays when you hold
    ***  down the ctrl key and hit D, but it sends the correct code).

In article <1196@vidiot.UUCP> brown@vidiot.UUCP (Vidiot) writes:
    **  According to the new PostScript reference manual, the ^D
    **  character is device dependent and should not be used (page 26).

Vidiot is correct in stating that Control-D characters are device
dependent.  That does not mean, however, that they should not be used
at all -- they can be used with printers that support Control-D.

In article <1991Jan02.190554.5285@cpqhou.uucp>
    pipkinsj@cpqhou.UUCP (Jeff Pipkins @Adv Dev@SE hou ) writes:

    *  That's an interesting statement.  The ^D scheme is implemented in
    *  every PostScript printer ever shipped.  What alternative, if any,
    *  is offered by page 26?

The Control-D character is a device dependent PROTOCOL that some
PostScript printers suport.  If your particular PostScript printer
supports this protocol, it's fine for you to use a Control-D character
to indicate End Of Job to the printer in question.

If your printer does not support this protocol, as for example,
a Linotronic connected via an Ethernet will not, you then must
use whatever the defined protocol is for indicating end of job
to the printer.