W3C

HTML Image Description Extension (longdesc)

Exit Criteria for Candidate Recommendation

The following DRAFT is under consideration by the HTML Accessibility Task Force (Task Force). The agreed upon text will be submitted to the HTML Working Group and the Protocols and Formats Working Group for approval.

Preconditions:

Variation on above

The Task Force has developed a suite of tests to measure support for all normative absolute (RFC2119 "MUST") requirements defined in the specification. The TF agrees that the tests marked "dependent" are sufficient to show whether an implementation that passes the "required" test also passes the relevant dependent tests. The TF agrees that there are sufficient tests for requirements in the specification labelled should (RFC2119 "SHOULD").

For the HTML 5 Image Description Extension to be advanced to a W3C Proposed Recommendation, the following conditions are to be met:

  1. At least two independent "release" implementations of a user agent pass each "required" test.
  2. At least two independent "release" implementations of an authoring tool pass each "required" test.
  3. At least one validator can successfully test whether content passes each "required" test.
  4. At least one user agent that passes a test passes the relevant dependent tests.
  5. At least 50 pages on the Web which are not developed as examples implement each content requirement.

Variation on above

  1. At least two independent implementations of a user agent pass each test for normative features that are applicable to user agents. (See Examples)
  2. At least two independent implementations of an authoring tool demonstrate support for features that are applicable to authoring tools. (See Examples)
  3. At least one validator can successfully test whether content passes each test for normative features that can be validated. (See Examples)
  4. At least one user agent that passes a test that is dependent an another, also passes the dependent test. (See Examples)
  5. At least 20 pages on the Web which are not developed as examples successfully demonstrate each content requirement. (See Examples)