Manual:$wgAllowMicrodataAttributes

Output: $wgAllowMicrodataAttributes
Enable HTML5 microdata attributes for use in wikitext.
Introduced in version:1.16.0 (r59035)
Removed in version:1.27.0 (Gerrit change 277562; git #I17a7bff)
Allowed values:(boolean)
Default value:false

Details edit

Allows to enable HTML5 microdata attributes for use in wikitext. For this to work $wgHtml5 must be set to "true", which is the default as well as unchangeable since MW 1.22+. Starting with MW 1.27+ HTML5 microdata attributes will be allowed by default.

See also edit