RE: [#1063] APPLET alt text and alternative content

Regarding a proposed HTML technique about embed and applet, Roberto Scano 
replied:
<Roberto>
Sorry, but embed and applet aren't elements that are not defined in any 
W3C dtd?
</Roberto>

I think this raises an important issue about User agent supported 
extensions.  Does Guideline 4.1,  "Use technologies according to 
specification," preclude the use of these extensions if they are 
accessible?   When I read the level 1 success criteria I am still not 
certain that embed and applet are prohibited or not?  I definitely think 
we need to make this clearer, but unfortunately I don't have any 
wordsmithing proposals. 

I am concerned about this issue because of the use of the contentEditable 
and designMode attributes that are available on block level elements in IE 
and Mozilla to implement HTML editing.  If JavaScript is enabled (and that 
is another open issue) I can make a version of an HTML editor that is 
accessible using WindowEyes.  Will this meet the 4.1 guideline?

thanks,
-becky

Becky Gibson
Web Accessibility Architect
                                                       
IBM Emerging Internet Technologies
5 Technology Park Drive
Westford, MA 01886
Voice: 978 399-6101; t/l 333-6101
Email: gibsonb@us.ibm.com