Principle 1 Perceivable · Guideline 1.3: Adaptable
1.3.6 Identify Purpose
Controls and icons are also marked up machine-readably.
What this means in practice
Goes beyond 1.3.5: buttons, icons and regions get machine-readable meaning too, so assistive technology can swap in familiar symbols or hide non-essential content.
Normative wording
The binding text lives at the W3C. What you read here is our own faithful rendering – not a quotation.