Path: utzoo!attcan!uunet!lll-winken!lll-tis!helios.ee.lbl.gov!pasteur!agate!ucbvax!SUN.COM!gregm
From: gregm@SUN.COM (Greg McLaughlin)
Newsgroups: comp.windows.news
Subject: Re:  implementation of inheritance within PostScript
Message-ID: <8807142340.AA29108@dublin.sun.com>
Date: 15 Jul 88 03:04:36 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The Internet
Lines: 25

>	Did Sun extend PostScript to incorporate inheritance,
>or do the NeWS operators used to implement inheritance only need
>PostScript's predefined dictionary semantics?
>
>Thanks in advance.
>
>
>Eric Marshall
>Software Productivity Consortium
>1880 North Campus Commons Drive
>Reston, VA 22091
>(703) 391-1838


The NeWS implemetation of inheritance only needs PostScript's predefined
dictionary sematics. At last check (about 1 year ago), if you run the NeWS
classing code through a LaserWriter it works fine. You can look at all the
code that is used in /usr/NeWS/lib/NeWS/class.ps.

Recently for 1.1 we implemented 'send' in C for performance, but class.ps
still contains the original implementaion of send.



Greg McLaughlin
Sun Microsystems Inc.