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At 10:14 AM -0700 10/14/03, Duff Johnson wrote:
> The minus is simply the fact that having two different places >for the same data in a document format means that one can never know >which is the current/valid set. This is one of (but certainly notthe only reason) why the PDF/A committee forbid /Info in their documents.
... but if the info is sync-ed each time the file is saved... then each set is equivalent... no?
You are assuming that EVERY PDF consumer in the workflow supports that syncing. As soon as one of the components updates EITHER of the parts but doesn't update the other - how does the next component know which one is the correct one and which way to sync??
One could also make the argument the other way. Discarding /Info would cause many current applications to break - HARD.
True. But XMP has already been in PDF for two years now, and it will be another 2 years (I would speculate based on 3->4->5->6 each being 24 months long cycles) before this change that Lori is asking about.
I think that if developers have two YEARS to update, we should be OK...except of course for legacy apps, but at what point do we pull away?!?!
Syncing might legitimately be seen as the right way to maintain a sufficient degree of backwards-compatibility. Otherwise, files saved with A7 would simply start to disappear off the radar of pre-A7 applications. That would be a GIANT no-no.
We already have this more significantly today with PDF 1.5/Acro6 and the new "compressed objects" which is COMPLETELY incompatible with older PDF consumers. Removing the /Info just means that some metadata is lost, instead of the entire document contents (as is the case with commpressed objects).
Leonard -- --------------------------------------------------------------------------- Leonard Rosenthol <mailto:[EMAIL PROTECTED]> Chief Technical Officer <http://www.pdfsages.com> PDF Sages, Inc. 215-629-3700 (voice) 215-629-0789 (fax)
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