| http://www.w3.org/ns/prov#value | - If you are doing Web2.0 development you are probably going to need it.here is an example of how one might use chaining to add the ARIA role of tab to all elements with a class ui-accordion-header), and the ARIA state aria-expanded=false, and add the ARIA role tabpanel to the next sibling of each (which happens to be the panels).$(.ui-accordion-header) .attr('role','tab') .attr('aria-e
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