The <abbr> tag describes an
abbreviated phrase or acronym.
By marking up abbreviations you can give useful
information to browsers, spellcheckers, screen readers,
translation systems and search-engines.
The town was another 50 <abbr title="kilometers">km</abbr> away
The <abbr> tag also supports the Global Attributes in HTML5
The <abbr> tag also supports the Event Attributes in HTML5
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