Guideline 3.1(in questo estratto locale i link interni che rimandano al glossario non funzionano)
3.1.1 Language of Page: The default human language of each Web page within the content can be programmatically determined. (Level A) How to meet 3.1.1
3.1.2 Language of Parts: The human language of each passage or phrase in the content can be programmatically determined. (Level AA) How to meet 3.1.2
Note: This requirement does not apply to individual words. It also does not apply to proper names, to technical terms or to phrases that have become part of the language of the context in which they are used.
3.1.3 Unusual Words: A mechanism is available for identifying specific definitions of words or phrases used in an unusual or restricted way, including idioms and jargon. (Level AAA) How to meet 3.1.3
3.1.4 Abbreviations: A mechanism for finding the expanded form or meaning of abbreviations is available. (Level AAA) How to meet 3.1.4
3.1.5 Reading Level: When text requires reading ability more advanced than the lower secondary education level, supplemental content or an alternate version is available that does not require reading ability more advanced than the lower secondary education level. (Level AAA) How to meet 3.1.5
3.1.6 Pronunciation: A mechanism is available for identifying specific pronunciation of words where meaning is ambiguous without knowing the pronunciation. (Level AAA) How to meet 3.1.6