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4.1.1 Parsing [Level A]



4.1.1 In content implemented using markup languages, elements have complete start and end tags, elements are nested according to their specifications, elements do not contain duplicate attributes, and any IDs are unique, except where the specifications allow these features. (Level A)Understanding Success Criterion 4.1.1

Note: Start and end tags that are missing a critical character in their formation, such as a closing angle bracket or a mismatched attribute value quotation mark are not complete.

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Sufficent Techniques

Advisory Techniques

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In order to evaluate this sc use both the Nu HTML validator, which validates the target url\source HTML, along with this handy bookmarklet from The Paciello Group, which hides all errors except those related to parsing. 

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