Editing Template:Abbr/doc (section)

== Accessibility and HTML validity concerns ==

{{Tl|Abbr}} template is intended {{em|only}} for use with abbreviations (including acronyms and initialisms).

The [[Web Content Accessibility Guidelines]] contain guidelines for using the {{tag|abbr|o}} element generated by this template; see section [http://www.w3.org/TR/WCAG20-TECHS/H28.html H28: Providing definitions for abbreviations by using the abbr and acronym elements].

Furthermore, the HTML specifications (both those of the [[W3C]] and [[WHATWG]]) strictly define the {{tag|abbr|o}} element as reserved for markup of abbreviations.  Abusing it for mouse-over tooltips breaks our [[Semantic HTML|semantic markup]] and makes our content {{em|invalid HTML}} (technically, "not [[Well-formed document|well-formed]]"; it will pass an basic [[Validator|automated validator]] test because such a tool can't tell that the logical application of the data to the structure isn't correct, only that tags are nested properly, etc.).