Widget: ExtLink
From Genesys Documentation
Use this widget to tell an external link to open in a new tab..
Using this widget[edit source]
Add {{#Widget:ExtLink|link=|displaytext=}} to your wiki page.
Copy to your site[edit source]
To use this widget on your site, just install MediaWiki Widgets extension and copy full source code of this page to your wiki as Widget:ExtLink article.