This is just a sample of external link. JQuery has added on it the target blank attribute to open it in a new window, a title that says "Opens new window" and the class "external" that allows you to style this link differently from the rest of the links. If the link is using a relative path which means it is an internal link, it doesn't get detected by jQuery. Also, if you're using an absolute path but your site domain is part of the URL then jQuery won't mark this as an external link.