Ausgehende Links für SEO eingrenzen | (dev.Google.com)
Sehr schöne Übersicht: nofollow sponsored etc.
a: The Anchor element - HTML: HyperText Markup Language | MDN
The a HTML element (or anchor element), with its href attribute, creates a hyperlink to web pages, files, email addresses, locations in the same page, or anything else a URL can address.
Linking to element on the same page