Re: [libreoffice-users] Clarification about ODF Extended

e-letter wrote:
> On 17/03/2014, Italo Vignoli <italo.vignoli@gmail.com> wrote:
> > Nothing happens when XML tags are ignored, to systems which are not
> > supporting the ODF 1.2 Extended document format. This is the reason why
> > we can suggest to use ODF 1.2 Extended as the preferred format, because
> > backward compatibility is maintained.
>
> Thanks to the odf implementor notes web page, how can this claim be
> true when these LO "features" break odf validation?

I haven't seen anything to say that the extensions prevent validation of 
ODF documents. The implementer notes you refer to say, under Extension 
namespaces, "Elements and attributes that are not defined in an ODF 
specification yet... have to be written with an extension namespace, 
otherwise validators will complain about invalid elements or 
attributes." This suggests that the standard and validators allow for 
extensions to the format.

Presumably extensions to the format would be ignored by applications not 
supporting that extension, but the rest of the document show as 
intended. e.g. with the extension for font embedding, applications 
supporting the extension would use the embedded fonts, while others 
would ignore the embedded fonts and use those on the system (as if the 
fonts were not embedded at all).

> > Somewhere in the wiki there is a list of the extended features, but
> > please remember that we are speaking of a document format and not of
> > software features. So, most of the new LibreOffice features do not
> > impact the document format.
>
> If LO "feature" (most likely designed to provide some sort of
> "compatibility" with m$) prevent odf validation, the document format
> must be impacted. Or is this a false conclusion?

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