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Link to original content: https://www.w3.org/TR/2016/NOTE-WCAG20-TECHS-20161007/G62
See Understanding Techniques for WCAG Success Criteria for important information about the usage of these informative techniques and how they relate to the normative WCAG 2.0 success criteria. The Applicability section explains the scope of the technique, and the presence of techniques for a specific technology does not imply that the technology can be used in all situations to create content that meets WCAG 2.0.
Any technology containing text.
This technique relates to:
The objective of this technique is to make the definition of a word, phrase, or abbreviation available by providing the definition in a glossary. A glossary is an alphabetical list of words, phrases, and abbreviations with their definitions. Glossaries are most appropriate when the words, phrases, and abbreviations used within the content relate to a specific discipline or technology area. A glossary can also provide the pronunciation of a word or phrase.
The glossary is included at the end of the Web page or the glossary is located via one of the mechanisms for locating content within a set of Web pages. (See Understanding Success Criterion 2.4.5.)
If the glossary contains several definitions for the same word, phrase, or abbreviation, simply providing the glossary is not sufficient to satisfy this Success Criterion. A different technique should be used to find the correct definition. This is especially important if the uses of the word, phrase, or abbreviation are not unique within the Web page, that is, if different occurrences of the item have different definitions.
Users of on line chat forums have created several acronyms and abbreviations to speed up typing conversations on the computer. For example, LOL refers to "laughing out loud" and FWIW abbreviates "for what it's worth". The site provides a glossary page that lists the expansions for the commonly used acronyms and abbreviations.
A Web page discussing mathematical theory includes a glossary of commonly used mathematical terms, abbreviations and acronyms.
A textbook contains a glossary of new vocabulary words introduced in each chapter.
Dutch text uses the phrase ' Hij ging met de kippen op stok ' (He went to roost with the chickens). The glossary explains that this phrase means ' Hij ging vroeg naar bed ' (He went to bed early).
The American novel "The Adventures of Huckleberry Finn" includes many idiomatic expressions that were used in the southwestern United States in the 1840s. In an online edition designed for students, each idiomatic expression is linked to an item in the glossary.
No resources available for this technique.
Check that either
The glossary is included in the Web page, or
A mechanism is available to locate the glossary.
Check that each word, phrase, or abbreviation to be defined is defined in the glossary
Check that the glossary contains only one definition for each item.
All three checks above are true.
Note: The definition of abbreviation used in WCAG is: "shortened form of a word, phrase, or name where the original expansion has not been rejected by the organization that it refers to and where the abbreviation has not become part of the language."
If this is a sufficient technique for a success criterion, failing this test procedure does not necessarily mean that the success criterion has not been satisfied in some other way, only that this technique has not been successfully implemented and can not be used to claim conformance.