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Test that <use> for external documents is supported: SVG degrades gracefully

From: Jonathan Chetwynd <j.chetwynd@btinternet.com>
Date: Sat, 6 Sep 2003 08:57:08 +0100
To: www-svg@w3.org
Message-Id: <B69D285C-E03F-11D7-AB0D-0003939B5AD0@btinternet.com>

It is crucial that SVG degrades gracefully, we are setting a precedent, 
which should include awareness of WCAG.

With the current development of SVG players that support <use>, and its 
ability to import <defs> from external libraries a script test would be 
useful, in the interim please can we have an example that degrades 

Our current implementation*:
svg players that support external <use>: a "fireCurtain" hides the 
redirect message.
svg players that dont support external <use> <defs> see a message 
offering upgrade and redirect links after 2 sec (assumes 
No svg player, refresh enabled auto-redirect
No svg player, javascript enabled auto-redirect

Does this work for You?
if not please let me know.


SVG for people with learning difficulties

displays graphics in IE6 with ASV6,
for other SVG player it display redirect and upgrade message
redirects if not true: (navigator.mimeTypes["image/svg-xml"] != null) 
{.....  //from sun.com

Check Jim Ley's email:
[svg-developers] Re: What is a test for <use> support
Fri, 5 Sep 2003 16:37:00 -0000
Received on Saturday, 6 September 2003 03:55:47 UTC

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