Implicit ARIA-Roles

Created by: pstonier

Web developers should not set the ARIA role and aria-* attributes to values that match the default implicit ARIA semantics defined in the table.

http://www.w3.org/TR/html-aria/#document-conformance-requirements-for-use-of-aria-attributes-in-html

This should be explained when covering ARIA Landmark Roles.

For example:

header: Default Implicit ARIA semantics - should not be used — If not a descendant of an article or section element role=banner is applied by the browser, otherwise no corresponding role