Lauren will attend. We have a variety of techniques, some are heuristics. So far, the need to repair has driven the priority rather than how complex or difficult it is. The priority is primarily based on WCAG priority in terms of what have to do. WC Not level of priority, concern over normative vs. informative.
Techniques are informative.
AERT is smorgasbord of informative stuff. To be normative, have to demonstrate that if you don't do it access is not possible. GJR Example is the alt-text registry. For most of the ATAG life we said, you must be able to configure prompting. We dropped that since it was not a requirement for accessibility.