principle: Operable
Make sure that everyone can navigate and interact with the same content and components. Can people operate this content with whatever capacity they have?
2.4.8 Location
The user is clearly informed where they are in a set of pages.
2.4.9 Link Purpose (Link Only)
It is clear where a link will take you from the link text alone, without having to read the text around it.
2.4.10 Section Headings
Headings are used to group distinct sections on a page.
2.4.11 Focus Not Obscured (Minimum)
The keyboard focus is not completely hidden by other content.
2.4.12 Focus Not Obscured (Enhanced)
The keyboard focus is fully visible at all times.
2.4.13 Focus Appearance
Focus indicators are at least 2px thick and have a 3:1 contrast ratio against adjacent colors.
2.5.1 Pointer Gestures
All actions that are carried out using a gesture (swiping, pinching, and so on) or drawing, can also be done with a button or buttons.
2.5.2 Pointer Cancellation
Actions (like pressing a button) aren’t triggered on mouse-down; rather on mouse-up.
2.5.3 Label in Name
The visible text of a form field, button, or link matches the text in the underlying code.
2.5.4 Motion Actuation
There is no reliance on device motion, like shaking or tilting, to carry out an action.
