Principle 4 – Robust

Content must be robust enough that it can be interpreted by a wide variety of user agents, including assistive technologies.

• Guideline 4.1 – Compatible(./guideline/compatible)
  • 4.1.2 Name, Role, Value(../level-a/name-role-value) Level A
  • 4.1.3 Status Messages(../level-aa/status-messages) Level AA (Added in 2.1)