This page lists additional JavaScript code you may need to customize some features of BotoneraPopups that depend on the content language of the wiki where it's being used, that do not necessarily match your preferred language. That's why it's not included in the language messages. Those additional code includes: The code below is already wrapped inside an if clause that checks for the content language of the wiki, so it won't affect on wikis with a different language, so you can safely place that code in your global.js.