Is there a way to differentiate external links?

[meator]

Question

External links can contain an icon next to them similar to this:

Does mdBook support this feature? I was searching around and the only thing I have found is a link to documentation of another project: https://docs.astro.build/de/recipes/external-links/

Version

No response

[szabgab]

AFAIK currently no such way, but see #2453