Google Code-in

MediaWiki messages sometimes have HTML tags. This is especially true for apihelp messages. These HTML tags are usually unchanged in the translation to other human languages, and even if the content of the tag is changed, it would be comfortable to have them clickable (especially in Right-to-Left languages).

Insertables live in the translatewiki code repository along with the project configuration. https://www.mediawiki.org/wiki/Help:Extension:Translate/Insertables has more info.