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Web Accessibility WCAG 2.0 Knowledge Base
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Principle 3 - Understandable
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Guideline 3.3 - Input Assistance
Guideline 3.3 - Input Assistance
Help users avoid and correct mistakes.
Guidelines and Criterion
3.3.1 Error Identification Level A
3.3.2 Label or Instructions Level A
3.3.3 Error Suggestion Level AA
3.3.4 Error Prevention (Legal, Financial, Data) Level AA
3.3.5 Help Level AAA
3.3.6 Error Prevention (All) Level AAA