Re: Difference between ps and pdf

Oliver Bandel <[email protected]> Wed, 06 Apr 2016 14:05:08 +0200

Newsgroups	gmane.comp.type-setting.lout
Message-ID	<20160406140508.Horde._xTyH8N7OZbdXYu8BYM_Old@webmail.in-berlin.de>

Zitat von Matěj Cepl <[email protected]> (Wed, 06 Apr 2016 13:07:34 +0200)

> On 2016-04-06, 10:50 GMT, Oliver Bandel wrote:
>> ps2pdf relies on Ghostscript, which is
>> a Postscript-interpreter.  So, if Ghostscript renders
>> Postscript correctly, chances are good, that the pdf will work
>> too.
>
> Yes, but PostScript is a full programming language, PDF is just
> a subset.
[...]

PDF is not able to compute like Postscript.
But it can display stuff as well.
So, during evaluation of Postscript-code the pdf-commands can be created.

Postscript will be interpreted every time again.
PDF will be created by running the Postscript-Code and then
the resulkt of the Postscript-interpretation is "frozen" into static
PDF.

So... ok, if you want to implement a webserver in Postscript,
this would not work with PDF.

Ciao,
   Oliver