relied upon (technologies that are) the content would not conform if that technology is turned off or is not supported role text or number by which software can identify the function of a component within Web
      content Example A number that indicates whether an image functions as a hyperlink, command button,
      or check box. same functionality same result when used Example A submit "search" button on one Web page and a "find" button on another Web page may
      both have a field to enter a term and list topics in the Web site related to the term
      submitted. In this case, they would have the same functionality but would not be labeled
      consistently. same relative order same position relative to other items Note Items are considered to be in the same relative order even if other items are inserted
      or removed from the original order. For example, expanding navigation menus may insert
      an additional level of detail or a secondary navigation section may be inserted into
      the reading order.