Go to Settings - User interface - External links
You will now be redirected to the overview of all settings of the external links. Here you can make the following adjustments.
You can choose to add an icon to the external links.
You can add icons when a mailto link is found.
You can add an icon for links to images.
You can choose to place the icon of an external link before or after placing a link
You can choose to make an exception for the icon when it is forwarded to a link in the same domain.
You can choose to open an external link in a new tab or not.
You can choose to give the visitor a pop-up that warns the visitor of the external link.
When you have set all the necessary settings, you can save the settings by clicking on save.