Change Note to mention programmatic access, structure, and that cell content can spoken, etc. This checkpoint should not be for dependent user agents only. Refer to issue 84. Proposed for all user agents and adding a Note. I don't think there's any reason.
Tables are two-dimensional, so they pose an additional problem of access.
The critical part is access to relevant information, which includes table structure. If there's a checkpoint for table navigation, then we can drop this. There are probably other multi-dimensional elements and we could regroup them. I don't want to bury a table navigation checkpoint. Make for all user agents.