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----- Forwarded message from Larry Masinter <LMM at acm.org> -----
Date: Tue, 11 Apr 2006 15:55:04 -0700
From: Larry Masinter <LMM at acm.org>
Reply-To: Larry Masinter <LMM at acm.org>
Subject: RE: Review solicited
forapplication/cellml-1.0+xmlandapplication/cellml-1.1+xml
To: 'Andrew Miller' <ak.miller at auckland.ac.nz>, ietf-types at
iana.org,
cellml-discussion at cellml.org

> > So content negotiation in practice doesn't use accept: headers
> > except in limited circumstances; for the most part, the sites send
> > some kind of 'active content' or content that autoselects for itself
> > what else to download; e.g., a HTML page which contains Javascript
> > code to detect the client's capabilities and figure out which other
> > URLs to load.
>
> The embedding of scripts in CellML is not recommended, not defined by any
> specifications, not (as far as I know) supported by any software packages,
and
> if vendors do want to support scripts, they should only use it express
> functions which cannot be represented in MathML, not for content
negotiation.
> Therefore, scripts are not a viable option for CellML negotiation.

If you have a HTML page that includes javascript that asks
IF (browser supports CellML 1.1)
THEN (load URL for cellML 1.1 content)
ELSE IF (browser supports CellML 1.0)
THEN (load URL for cellML 1.0 content)
ELSE
(insert content for 'can't display model')

you don't put the Javascript inside CellML, you put it in the
HTML code that decides whether or not to load CellML at all.

> BTW I assume you are talking purely about Accept: and not
Accept-Language:, as
> Accept-Language: is widely used by multilingual sites to determine which
> language to serve.

Accept-language: doesn't have the same scalability problems that
accept: has.





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• [cellml-discussion] Fwd: RE: Review solicited forapplication/cellml-1.0+xmlandapplication/cellml-1.1+xml, Andrew Miller, 04/12/2006

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