Principle 3: Understandable Flashcards
Information and the operation of the user interface must be understandable.
Make text content readable and understandable.
Guideline 3.1 Readable
The default human language of each Web page can be programmatically determined.
3.1.1 Language of Page
What level is 3.1.1 Language of Page?
A
The human language of each passage or phrase in the content can be programmatically determined 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.
3.1.2 Language of Parts
What level is 3.1.2 Language of Parts?
AA
A mechanism is available for identifying specific definitions of words or phrases used in an unusual or restricted way, including idioms and jargon.
3.1.3 Unusual Words
What level is 3.1.3 Unusual Words?
AAA
A mechanism for identifying the expanded form or meaning of abbreviations is available.
3.1.4 Abbreviations
What level is 3.1.4 Abbreviations?
AAA
When text requires reading ability more advanced than the lower secondary education level after removal of proper names and titles, supplemental content, or a version that does not require reading ability more advanced than the lower secondary education level, is available.
3.1.5 Reading Level
What level is 3.1.5 Reading Level?
AAA
A mechanism is available for identifying specific pronunciation of words where meaning of the words, in context, is ambiguous without knowing the pronunciation.
3.1.6 Pronunciation
What level is 3.1.6 Pronunciation?
AAA
Make Web pages appear and operate in predictable ways.
Guideline 3.2 Predictable
When any user interface component receives focus, it does not initiate a change of context.
3.2.1 On Focus
What level is 3.2.1 On Focus?
A
Changing the setting of any user interface component does not automatically cause a change of context unless the user has been advised of the behavior before using the component.
3.2.2 On Input
What level is 3.2.2 On Input?
A
What level is 3.2.3 Consistent Navigation?
AA
Navigational mechanisms that are repeated on multiple Web pages within a set of Web pages occur in the same relative order each time they are repeated, unless a change is initiated by the user.
3.2.3 Consistent Navigation
Components that have the same functionality within a set of Web pages are identified consistently.
3.2.4 Consistent Identification
What level is 3.2.4 Consistent Identification?
AA
What level is 3.2.5 Change on Request?
AAA
Changes of context are initiated only by user request or a mechanism is available to turn off such changes.
3.2.5 Change on Request
Help users avoid and correct mistakes.
Guideline 3.3 Input Assistance
If an input error is automatically detected, the item that is in error is identified and the error is described to the user in text.
3.3.1 Error Identification
What level is 3.3.1 Error Identification?
A
Labels or instructions are provided when content requires user input.
3.3.2 Labels or Instructions
What level is 3.3.2 Labels or Instructions?
A
If an input error 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.
3.3.3 Error Suggestion
What level is 3.3.3 Error Suggestion?
AA
For Web pages that cause legal commitments or financial transactions for the user to occur, that modify or delete user-controllable data in data storage systems, or that submit user test responses, at least one of the following is true:
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.
3.3.4 Error Prevention (Legal, Financial, Data)
What level is 3.3.4 Error Prevention (Legal, Financial, Data)?
AA
Context-sensitive help is available.
3.3.5 Help
What level is 3.3.5 Help?
AAA
For Web pages that require the user to submit information, at least one of the following is true:
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.
3.3.6 Error Prevention (All)
What level is 3.3.6 Error Prevention (All)?
AAA
