Re: Standardizing new HTML features

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Message-id: <Afs704MB0KGW83jGQ_@holmes.parc.xerox.com>
Date: 	Thu, 29 Apr 1993 17:17:08 PDT
Sender: Bill Janssen <janssen@parc.xerox.com>
From: Bill Janssen <janssen@parc.xerox.com>
To: www-talk@nxoc01.cern.ch, sanders@bsdi.com
Subject: Re: Standardizing new HTML features
In-reply-to: <9304292307.AA00428@austin.BSDI.COM>
References: <9304292307.AA00428@austin.BSDI.COM>

Excerpts from ext.WorldWideWeb: 29-Apr-93 Re: Standardizing new HTML ..
Tony Sanders@bsdi.com (366)

> > Clearly Ghostview talks to Ghostscript in some fashion.  Is the actual
> > communication protocol between the two documented in some fashion other
> > than the source code?
> It opens a pipe and talks postscript to it I'm sure.

Ah, I had hoped that you might actually know.  There is an additional
protocol using X Client Events that runs between ghostscript and
ghostview.  Also, the environment variable protocol you described seems
to be more complex; it's more like

    setenv GHOSTVIEW "<window-id-1>  <window-id-2>"

where <window-id-1> is the window on which ghostscript is supposed to
render, and <window-id-2> is the window to which ghostscript sends
events, in order to run this out-of-band additional protocol.  I believe
that

    setenv GHOSTVIEW "<window-id>"

will also work in some fashion, though I don't know to what extent the
protocol will be crippled.

Bill