LEvel definition

Two level definitions to start discussion Thursday
#1 - Is from our current doc
#2 - is one that John sent in recently as part of "easier to understand"
work
Others are invited - please post to the list
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#1 -from our current doc
Level 1 success criteria: 
1- do not specify how information is presented
2- are reasonably applicable to all websites
3- some are machine-testable. Others require human judgment. Success
criteria that require human testing yield consistent results among multiple
testers.
Level 2 success criteria: 
1- may require an author to present content in particular ways
2- are reasonably applicable to all websites
3- some are machine-testable. Others require human judgment. Success
criteria that require human testing yield consistent results among multiple
testers.
Level 3 success criteria: 
1- are additional criteria that go beyond Level 1 and 2 that may be applied
to make sites accessible to more people with all or particular types of
disability
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#2 -one that John sent in recently as part of "easier to understand" work
Level 1 success criteria
1. Do not set limits on content or presentation;
2. achieve a minimum level of accessibility through markup,
scripting, or other technologies that interact with user agents,
including assistive technologies;
3. may reasonably be applied to all Web resources;
4. are testable. some success criteria are machine-testable. Others
require human judgment. Success criteria that require human testing are
capable of yielding consistent results among multiple testers.
Level 2 success criteria
1. Build on Level 1;
2. enhance accessibility through presentation;
3. may reasonably be applied to all Web resources;
4. are testable. some success criteria are machine-testable. Others
require human judgment. Success criteria that require human testing are
capable of yielding consistent results among multiple testers.
Level 3 success criteria
1. May provide essential benefits for users with specific
disabilities;
2. may enhance accessibility for a broad range of users with
disabilities;
3. may affect content as well as presentation and markup;
4. may reasonably be applicable to selected resources;
5. are testable. some success criteria are machine-testable. Others
require human judgment. Success criteria that require human testing are
capable of yielding consistent results among multiple testers. 
Gregg
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Gregg C Vanderheiden Ph.D. 
Professor - Depts of Ind. Engr. & BioMed Engr.
Director - Trace R & D Center 
University of Wisconsin-Madison 
<http://trace.wisc.edu/> FAX 608/262-8848 
For a list of our listserves http://trace.wisc.edu:8080/mailman/listinfo/