3. Understandable Flashcards
Information and the operation of the user interface must be understandable.
3.1 Readable
Make text content readable and understandable.
3.1.1 Language of Page
(Level A)
The default human language of each Web page can be programmatically determined.
3.1.2 Language of Parts
(Level AA)
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.
3.1.5 Reading Level
(Level 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.
3.1.3 Unusual Words
(Level AAA)
A mechanism is available for identifying specific definitions of words or phrases used in an unusual or restricted way, including idioms and jargon.
3.1.6 Pronunciation
(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.
3.2 Predictable
Make Web pages appear and operate in predictable ways.
3.2.1 On Focus
When any user interface component receives focus, it does not initiate a change of context.
3.2.2 On Input
(Level 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.
3.2.3 Consistent Navigation
(Level 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.
3.2.4 Consistent Identification
(Level AA)
Components that have the same functionality within a set of Web pages are identified consistently.
3.2.5 Change on Request
(Level AAA)
Changes of context are initiated only by user request or a mechanism is available to turn off such changes.
3.2.6 Consistent Help
(Level A) [New]
If a Web page contains any of the following help mechanisms, and those mechanisms are repeated on multiple Web pages within a set of Web pages, they occur in the same order relative to other page content, unless a change is initiated by the user:
Human contact details;
Human contact mechanism;
Self-help option;
A fully automated contact mechanism.
3.3 Input Assistance
Help users avoid and correct mistakes.
3.3.1 Error Identification
(Level A)
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.