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Re: CSIRO SVG Viewer 0.8

From: Chris Lilley <chris@w3.org>
Date: Fri, 26 Nov 1999 15:45:05 +0100
Message-ID: <383E9CF1.29D81537@w3.org>
To: KAMTHAN pankaj <kamthan@cs.concordia.ca>
CC: Dean Jackson <Dean.Jackson@cmis.CSIRO.AU>, www-svg@w3.org


KAMTHAN pankaj wrote:

> 2. The sample file opac.svg uses the PUBLIC identifier for DTD
> reference, and so (unlike others) can not be viewed locally.

Yes, it can.

The point of a public identifier is to allow convenient lookup of
well-known DTDs, for example in a catalog file, without necessarily
having to go to the net each and every time to fetch the DTD. Once
should be sufficient. So, whether there is a SYSTEM or PUBLIC identifier
is not the issue; rather, it is whether the public identifier is used to
check a local catalog, only falling back to the URL is the catalog does
not have that DTD; or whether the URL is dereferenced on each program
launch (or worse, for each graphic).

The IBM viewer recently updated to have this capability (which is
traditional in SGMKL systems, and is equally applicable to XML). It
would be good if other implementations took the same path.

For systems which insist on going to the net each time, it is still
possible to get sensible offline behaviour by using a local proxy, such
as Jigsaw, which has an offline mode. But this should not be necessary.

> 3. It seems that linking based on xlink using href as an
> attribute is not supported.

Which draft of SVG does the 0.8 release conform to? The 6th draft
(August) uses xlink href.

--
Chris
Received on Friday, 26 November 1999 09:45:20 GMT

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