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Subject: RE: [oic-comment] Notes on Notes on Marston Presentation


Thank you for your comments.  

I have added them to the wiki under the note topic for that slide page,

 - Dennis

-----Original Message-----
From: david_marston@us.ibm.com [mailto:david_marston@us.ibm.com] 
Sent: Wednesday, January 14, 2009 10:30
To: oic-comment@lists.oasis-open.org
Subject: [oic-comment] Notes on Notes on Marston Presentation

Some wording details in Dennis Hamilton's notes that should be corrected: 

"Example of different levels for MathML: formula presentation versus
interpretation of the formula" 

Actually, "level" is a different Dimension of Variability, which became
clear later in the presentation. The two uses of MathML described above
illustrate how one spec can specify behavior of two classes of product. And
small vs. large display is more likely to represent two profiles rather than
two classes of product. Rendering audibly vs. visibly could go either way:
if you focus on read-only rendering, you are identifying two profiles that
perform the same functionality (make a document comprehendable to humans);
or you could call them different classes of product if the conformance
expectations are considered very different. 

Levels are supposed to be about functionality. For example, a Level N
implementation would be required to have the features defined in all levels
up to N-1, plus additional features that belong to Level N (and higher
.................David Marston 
IBM Research

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