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

[marbux <marbux@gmail.com>]

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:

Ignorable
ProcessContent
PreserveElements
PreserveAttributes
MustUnderstand

Alternate content attributes:

AlternateContent
Choice
Fallback

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.
<http://standards.iso.org/ittf/PubliclyAvailableStandards/index.html>.

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 ..."),
<http://www.iec.ch/tiss/iec/Directives-Part1-Ed6.pdf>.

Best regards,

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

-- 
Universal Interoperability Council
<http:www.universal-interop-council.org>