Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uunet!auspex!guy
From: guy@auspex.auspex.com (Guy Harris)
Newsgroups: comp.windows.x
Subject: Re:  X Windows and Unix SysVR4
Message-ID: <5608@auspex.auspex.com>
Date: 30 Jan 91 20:00:06 GMT
References: <9101291532.AA17810@etude.urbana.mcd.mot.com>
Organization: Auspex Systems, Santa Clara
Lines: 14


 >|However is X11 part of the SysVR4 specification?  Would these guys
 >|be free to implement OpenLook with some other windowing system in the future,
 >|or is the X11 component of the specification cast in stone?
 >---
 >OPEN LOOK is actually a look and feel specification rather than a
 >toolkit.  There are several toolkits implementing it in different ways.
 >The XView toolkit, for instance, is X based but not Xt based, while the
 >OLIT toolkit is Xt based.  You are free to implement it any way you like.

And, as noted by another poster, the tNt toolkit isn't X-based at all,
it's NeWS-based.  I think the window system being done for QNX by its
developer (I've forgotten their name) uses the OPEN LOOK L&F, but isn't
X or NeWS.