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Re: Legal Aspects of archiving XML/XSL documents

From: G. Ken Holman <gkholman@CraneSoftwrights.com>
Date: Wed, 07 Aug 2002 10:26:24 -0400
Message-Id: <>
To: www-xsl-fo@w3.org

At 2002-08-06 19:37 -0400, Jörg Sukop wrote:
>Is it possible to guarantee that there will be no difference in layout and 
>content of a printed/rendered document no matter if it is printed 
>immediately or after 10 years?

:{)} Only if you re-run the same processor you ran 10 years prior.

As I understand it, XSL-FO does not guarantee page fidelity between two 
conforming processors.  Each processor can generate a different area tree 
than the other as a result of interpreting the objects (because of 
hyphenation and justification, different initial values for half-leading, 
different choices for fonts when not specified by the stylesheet, etc.).

One can get asymptotically closer to page fidelity through rigourous 
specification of properties, but I don't think it can be guaranteed to 
specify enough to get identical area trees and renderings between two 
conforming implementations.

................. Ken

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Received on Wednesday, 7 August 2002 16:14:25 UTC

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