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Subject: Re: [office] ODF 1.2 Single-Level Conformance and Law of Unintended Consequences
On Monday 19 January 2009, robert_weir@us.ibm.com wrote: > Since current implementations do not (to my > knowledge) introduce foreign attributes and elements into documents, they > would not be impacted by this change. By foreign, do you mean attributes and elements not defined by ODF? Then I beg to differ, there are plenty of these, see below. > Arbitrary extensions are outside of any basis for interoperability, so I'd > argue they should be outside of conformance. Obviously. > The point is that the ODF 1.2 metadata was designed to remove the need for > foreign elements and attributes. That original extensibility feature was > not intended for extending the processing model of ODF, though in theory > it could be (mis)used for that purpose. But in practice, the mechanism > has not been used at all. I am very surprised by this; either I'm misunderstanding what this is about, or the use of extensions isn't known enough by this TC. Let me point out some examples: * KWord can save a table style that points to a frame+paragraph style, it does that by using the koffice:frame-style-name and koffice:paragraph-style-name properties in the style. This doesn't create a huge interop problem since existing documents are rendered fine by other implementations, those properties are only used when creating new tables. * KWord can define the behavior of a frame when a new page is created (for DTP-like usage where you might want a similar frame to be created on the next page at the exact same position; another one use case is a company logo in a page corner for instance). This is done with koffice:frame-behavior-on-new-page in the frame style; and here again it only affects further editing, not rendering of a given document. * OpenOffice has similar things, using the xmlns:ooo="http://openoffice.org/2004/office" namespace for instance. or xmlns:ooow="http://openoffice.org/2004/writer" or xmlns:oooc="http://openoffice.org/2004/calc". Is this what "foreign elements and attributes" was about? -- David Faure, faure@kde.org, sponsored by Qt Software @ Nokia to work on KDE, Konqueror (http://www.konqueror.org), and KOffice (http://www.koffice.org).
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