title: Abbreviations Extension prev_title: Extra Extension prev_url: extra.html next_title: Attribute Lists Extension next_url: attr_list.html Abbreviations ============= Summary ------- The Abbreviations extension adds the ability to define abbreviations. Specifically, any defined abbreviation is wrapped in an `<abbr>` tag. The Abbreviations extension is included in the standard Markdown library. Syntax ------ Abbreviations are defined using the syntax established in [PHP Markdown Extra][php]. [php]: http://www.michelf.com/projects/php-markdown/extra/#abbr Thus, the following text (taken from the above referenced PHP documentation): The HTML specification is maintained by the W3C. *[HTML]: Hyper Text Markup Language *[W3C]: World Wide Web Consortium will be rendered as: <p>The <abbr title="Hyper Text Markup Language">HTML</abbr> specification is maintained by the <abbr title="World Wide Web Consortium">W3C</abbr>.</p> Usage ----- See [Extensions](index.html) for general extension usage, specify `abbr` as the name of the extension. This extension does not accept any special configuration options.