CGZ - My $0.02 worth

[Robert Orosz <roboro@auto-trol.com>]

Hi all,

I've finally found the time to read the entire CGZ thread in the W3C WG
beginning with Benoit's initial question,

http://lists.w3.org/Archives/Public/public-webcgm-wg/2008Oct/0020.html

and ending with Dave's last response.

http://lists.w3.org/Archives/Public/public-webcgm-wg/2008Nov/0022.html

I agree with the points Lofton made and the conclusion,

http://lists.w3.org/Archives/Public/public-webcgm-wg/2008Nov/0020.html

but I wanted to add a couple of things that weren't mentioned in the
discussion. In particular, Dieter asked if this was legal,

http://lists.w3.org/Archives/Public/public-webcgm-wg/2008Nov/0018.html

and Lofton responded.

http://lists.w3.org/Archives/Public/public-webcgm-wg/2008Nov/0021.html

I think the CGM standard gives a more complete answer than Lofton's. Section
9.5.2.11 of CGM99 reads as follows:

9.5.2.11 Physical media
Physical file format and other issues of media, delivery, or networking are
beyond the scope of ISO/IEC 8632 and
shall not be specified by profiles of ISO/IEC 8632. These issues may however
be important for successful
interoperability and if addressed by the application commmunity (sic), shall
be addressed in specifications other than the
profiles.

I think this is clearly a case of "physical file format," so 9.5.2.11
applies. I also draw a distinction between the WebCGM Profile and the WebCGM
Recommendation. The former is a subset of the latter. It was Chapter 4 in
the WebCGM 1.0 Recommendation, and it is Chapter 6 in the WebCGM 2.0
Recommendation / OASIS Standard. Therefore, I think the normative definition
of CGZ should be removed from T.13.1 in section 6.2 (the WebCGM Profile).
Obviously then, it needs to be added someplace else to the WebCGM
specification. I think Chapter 7 is the logical place since it is imposing
an additional conformance requirement above and beyond the WebCGM profile
itself.

Nobody mentioned the issue of MIME media type. Does CGZ need to be
registered as a MIME media type?

Again, this is just my two pennies worth.

Rob

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