[ Mostly, but not fully. The incompatibilities are of sufficient magnitude that when QMS introduced its first Level 2 compatible printer, it provided a ``Level 1'' mode for backward compatibility, for handling jobs which wouldn't run in Level 2. This should not be taken as too much of a criticism...some of the incom- patibilities from Level 1 to Level 2 involved fixing design mistakes in Level 1, or tightening up definitions which had been loose in Level 1 (where careless application writers had made use of the looseness, writing not to the language specification but to particular implementations.) ]
(C) 1990 Adobe Systems Incorporated. All rights reserved. PostScript, Display PostScript, and Adobe are trademarks of Adobe Systems Incorporated registered in the U.S. All other product names are trademarks or registered trademarks of their respective holders.
This FAQ was compiled based heavily on the contributions of and with the help of Henry McGilton, Dick Dunn, Howard Gayle, Dan Carrigan, Carl Orthlieb, Ed Garay, Robert Lerche, Bruno Hall, Tom Epperly, and Chris Lewis.
Also thanks to contributors Paul Balyoz, Karl Berry, Jerry Black, Charles Cashion, Jim DeLaHunt, Leonard Hamey, Chris Herborth, Steve Kinzler, Bill Lee, Timo Lehtinen, Carl Lydick, Otto Makela, Bill Pringle, Tony Valsamidis, and Jamie Zawinski.
Special thanks to Ken Porter, who originally compiled and organized this FAQ.
Ver Date Reason ---------------------------------------------------------------- 1.00 12-18-90 Creation by Ken Porter 1.06 5-29-91 expanded on EPS explanation, general updates 2.00 10-25-92 Brought up to date and expanded, by Jon Monsarrat 2.1 5-21-93 Revised because of new comp.sources.postscript group. 2.2 12-26-93 Finally incorporated all the '93 comments and suggestions. 2.3 07-07-94 Incorporated early '94 comments and suggestions. 3.0 02-01-98 Overhauled for PostScript.org
This FAQ is copyright (C) 1994 by Allen Braunsdorf. Permission is granted to freely edit and distribute as long as this copyright notice is included.
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