The Universal Language Selector (ULS) provides a flexible way to configure and deliver language settings like interface language, fonts, and input methods (keyboard mappings). From June 11, 2013 on, ULS is being made available to all Wikimedia wikis in 5 phases.
On July 9, 2013, the ULS deployment will be completed by making it available to all other Wikimedia wikis (phase 5).
The ULS can be visible in two ways: In the sidebar as an icon that looks like a gear for wikis with language versions, like Wikipedia, or in the personal toolbar at the top of wiki pages for wikis without language versions, like Wikimedia Commons and Meta-Wiki. Clicking the icon opens the Language settings panel that can be used to set the display and input settings. Based on the geographic location of users, the initial set of language preferences is presented. Users can set the input methods and fonts to that they want to use. Logged-in users can also change the language for the MediaWiki menu items.