Understandable
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Information and UI must be understandable:
Make text readable and understandable 📖
Make content appear predictable 📈
Help users avoid and correct mistakes 🚫➡️✅
Make text content readable and understandable.
Success Criterion 3.1.1 Language of Page
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(Level A)
The default of each can be .
Success Criterion 3.1.2 Language of Parts
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(Level AA)
The of each passage or phrase in the content can be except for proper names, technical terms, words of indeterminate language, and words or phrases that have become part of the vernacular of the immediately surrounding text.
Success Criterion 3.1.3 Unusual Words
(Level AAA)
(Level AAA)
(Level AAA)
(Level AAA)
Make Web pages appear and operate in predictable ways.
(Level A)
(Level A)
(Level AA)
(Level AA)
(Level AAA)
Help users avoid and correct mistakes.
(Level A)
(Level A)
(Level AA)
(Level AA)
Reversible
Submissions are reversible.
Checked
Data entered by the user is checked for input errors and the user is provided an opportunity to correct them.
Confirmed
A mechanism is available for reviewing, confirming, and correcting information before finalizing the submission.
(Level AAA)
(Level AAA)
Reversible
Submissions are reversible.
Checked
Data entered by the user is checked for input errors and the user is provided an opportunity to correct them.
Confirmed
A mechanism is available for reviewing, confirming, and correcting information before finalizing the submission.
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A is available for identifying specific definitions of words or phrases , including and .
Success Criterion 3.1.4 Abbreviations
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A for identifying the expanded form or meaning of is available.
Success Criterion 3.1.5 Reading Level
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When text requires reading ability more advanced than the after removal of proper names and titles, , or a version that does not require reading ability more advanced than the lower secondary education level, is available.
Success Criterion 3.1.6 Pronunciation
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A is available for identifying specific pronunciation of words where meaning of the words, in context, is ambiguous without knowing the pronunciation.
Success Criterion 3.2.1 On Focus
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When any receives focus, it does not initiate a .
Success Criterion 3.2.2 On Input
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Changing the setting of any does not automatically cause a unless the user has been advised of the behavior before using the component.
Success Criterion 3.2.3 Consistent Navigation
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Navigational mechanisms that are repeated on multiple within a occur in the each time they are repeated, unless a change is initiated by the user.
Success Criterion 3.2.4 Consistent Identification
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Components that have the within a are identified consistently.
Success Criterion 3.2.5 Change on Request
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are initiated only by user request or a is available to turn off such changes.
Success Criterion 3.3.1 Error Identification
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If an is automatically detected, the item that is in error is identified and the error is described to the user in text.
Success Criterion 3.3.2 Labels or Instructions
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or instructions are provided when content requires user input.
Success Criterion 3.3.3 Error Suggestion
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If an is automatically detected and suggestions for correction are known, then the suggestions are provided to the user, unless it would jeopardize the security or purpose of the content.
Success Criterion 3.3.4 Error Prevention (Legal, Financial, Data)
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For that cause or financial transactions for the user to occur, that modify or delete data in data storage systems, or that submit user test responses, at least one of the following is true:
Success Criterion 3.3.5 Help
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is available.
Success Criterion 3.3.6 Error Prevention (All)
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For that require the user to submit information, at least one of the following is true: