An XHTML file that is not well-formed because the elements dt (for marking up the headword) and dd (for marking up the definition) overlap while they should follow each other. This makes the structure ambiguous and might cause problems. Well-formedness error: overlapping elements Christophe.Strobbe@esat.kuleuven.be en Copyright BenToWeb 2005-2007 2005-10-05 rejected QA Documents must be well-formed Documents must be well-formed

This test case is intended to fail because the markup is ambiguous and may cause problems for assistive technologies. (This test case is not about the order of the definitions but about overlapping markup structures.)

oneExpert

You will be presented a short definition list with two definitions for the term "abbreviation". The goal of the task is to see whether these defintions are presented to you properly through your assistive technology.

How many definitions are available for the word abbreviation?

 -1 1 -2 -3 -4 blindness

You will be presented an explanation of the word "abbreviation" which has 2 sub-numbers. The goal of the task is to see whether it was read to you appropriately.

How many definitions are available for the word abbreviation?

 -1 1 -2 -3 -4 blindness

You will be presented an explanation of the word "abbreviation" which has 2 sub-numbers. The goal of the task is to see whether it was read to you appropriately.

How many definitions are available for the word abbreviation?

 -1 1 -2 -3 -4 dyslexia intellectual disability

The syntax of the document is not correct; the content may be rendered in an incorrect order.

The document is not well-formed: the dt element should be closed before starting the dd element. See 'Common HTML 4.01 validity errors and their effect on accessibility' at http://www.w3.org/2005/Talks/0908-wcag/validity-errors.html and 'Tag Soup: How UAs handle <x> <y> </x> </y>' at http://ln.hixie.ch/?start=1037910467&count=1.

This test case maps to technique H74: Ensuring that all id attribute values are unique for the document AND that the Web unit is well-formed (http://www.w3.org/TR/2006/WD-WCAG20-TECHS-20060427/Overview.html#H74) but fails.

The syntax of the document is not correct; the content may be rendered in an incorrect order.

The document is not well-formed: the dt element should be closed before starting the dd element. See 'Common HTML 4.01 validity errors and their effect on accessibility' at http://www.w3.org/2005/Talks/0908-wcag/validity-errors.html and 'Tag Soup: How UAs handle <x> <y> </x> </y>' at http://ln.hixie.ch/?start=1037910467&count=1.