Accessibility · The testing · Element
The user testing
Whether people who rely on assistive technology have used it.
The part
What it is
Conformance and usability are different. An interface can meet every criterion and still be unusable with a screen reader.
One session with an experienced assistive-technology user finds things no checklist does.
The smallest level
The attributes it carries
Each attribute is one of the framework’s shared types. What a date is, and how it is written, is defined once for the whole model — the note here says what it means in this particular place.