The plugin is a Wikipedia plugin, for setting links to Wikipedia articles. The language and the description for every link can be set individually.
Add to your content of a page or article
[[search tag]]
Another way for using the Wikipedia call, is to use the additional syntax
[[ article | view ]]
creates a link to the article and within the content the view text is shown
[[ language | article | view ]]
creates a link to the article with the language and within the content the view text is shown