Hello!
I am using a text block with anchor links and normal links. They need a slight visual difference. My idea is adding classes:
How can I change the blueprint of links? And how can I implement the class? 
Do you really need a class? You can target them based on their href attribute instead?
To be able to add a class to the links, you would have to not only adapt the dialog with an additional field, but also make sure that the class is then added to the link.
Good and easy idea — thank you! 