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From: herbw@midas.tek.CSNET (Herb Weiner)
Newsgroups: mod.computers.laser-printers
Subject: Four Questions for PostScript Wizards
Message-ID: <8608281710.AA26825@midas.TEK>
Date: Thu, 28-Aug-86 13:10:19 EDT
Article-I.D.: midas.8608281710.AA26825
Posted: Thu Aug 28 13:10:19 1986
Date-Received: Fri, 29-Aug-86 23:54:48 EDT
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The ARPA Internet
Lines: 64
Keywords: Fonts, Page Setup, Cache, Files
Approved: laser-lovers@washington.arpa

--------
I would appreciate any information that anyone (are you listening, Adobe?) can
supply to the following four questions:

1.  I have successfully defined fonts (FontType=3) in PostScript.  Can anyone
    tell me how to make these fonts look like Adobe downloadable fonts?

    a.  How does one create a file which will be automatically downloaded by
        the new LaserWriter drivers?

    b.  Judging by the ICONS I have found, there is more than one format for
        downloadable fonts (at least Apple, Adobe).  What are the differences?

    c.  How does one create a font (with a FontType other than 3?) to which
        one can apply the charpath operator?  This operator seems to work only
        with Adobe fonts.

    d.  I have NO interest in encrypting the font, and I am NOT looking for
        information about EEXEC.

2.  Footnote 4 on page 286 of the PostScript Language Reference Manual implies
    that it is possible for a sophisticated user to other page setup procedures
    for the Apple LaserWriter besides letter, legal, and note.  I realize that
    such a procedure would be device specific and would not work on all
    PostScript devices.  My interest in doing this is to maximize the amount
    of virtual memory available on a device (the LaserWriter) which has severely
    limited amounts of physical memory, while providing sufficient margins to
    get my job done.  Clearly, three choices is not enough!

    a.  Can anyone tell me what I should use as the fourth (proc) parameter to
        framedevice?

    b.  Alternatively, can someone provide me with the definitions of the built
        in procedures letter, legal, and note, which the footnote implies are
        available for study?

    c.  Alternatively, if Adobe considers these proprietary, can they supply
        an encrypted downloadable procedure for the Apple LaserWriter (Plus)
        which takes three arguments (matrix, width, height) and does the
        appropriate framedevice?

    d.  Incidentally, is it possible to have non-symetrical margins; e.g.
        1 inch on the left and 1/2 inch on the right?

3.  With the same motivation as for question 2, is it possible to reduce the
    amount reserved for font cache in the Apple LaserWriter, and thereby
    increase the amount of virtual memory available?  Obviously, this would
    have an impact on performance.

4.  Page 260 of the PostScript Language Reference Manual states that there is
    a limit of 6 open files in the Apple LaserWriter.  Since it does not appear
    possible to open a user-defined file (which I suppose would be buffered in
    memory), and since I can only account for 5 files (%stdin, %stdout, %stderr,
    %statementedit, %lineedit), can anyone tell me why the limit is 6?

I hope that you find these questions stimulating, and eagerly await your
responses.

                                  -- Herb Weiner, PostScript Enthusiast
                                     ...!tektronix!midas!herbw
                                     Tektronix
                                     P.O. Box 4600
                                     Beaverton, Oregon 97076
                                     (503) 629-1157