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Subject: Re: [opendocument-users] RE: office-comment Frames / Information Loss (ODF all versions)

Re preservation and processing of unrecognized markup:

This is an area where some harmonization with ISO/IEC:29500-2008 might
be seriously considered. Part 3 -- Markup Compatibility and
Extensibility specifies a compatibility framework reliant on
compatibility and alternate content attributes. The list of such
attributes (which have their own namespace) is:

Compatibility attributes:


Alternate content attributes:


As to the compatibility attributes: "This Part of ISO/IEC 29500 can be
implemented using a preprocessing architecture in the form of a
software module called a markup preprocessor. A markup preprocessor
can use the Markup Compatibility elements and attributes to produce
output that is free of all ignorable non-understood content, all
Markup Compatibility elements and attributes, and all elements and
attributes in subsumed namespaces."

Part 3 can be downloaded from this ISO web page, currently third entry
from the bottom of the page.

Conceivably, this may be an area where ODF should not reinvent the
OOXML wheel, since ODF has no equivalent mechanism. Cf., ISO/IEC
Directives Part 2 section 3.7. ("A Publicly Available Specification
[being processed by ISO/IEC] is not allowed to conflict with an
existing International Standard"),
<http://www.iec.ch/tiss/iec/Directives-Part2-Ed5.pdf>; see also
ISO/IEC Directives Part 1 section 3.2.3. ("The PAS is published after
verification of the presentation and checking that there is no
conflict with existing International Standards ..."),

Best regards,

Paul E. Merrell, J.D. (Marbux)

Universal Interoperability Council

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