In the rich text editor:
@sprigitis
In a comment:
[sprigitis](https://www.chowlings.com/user/sprigitis)
For Names and Avatars:
In the rich text editor:
%sprigitis
In a comment:
[](https://www.chowlings.com/user/sprigitis) [sprigitis](https://www.chowlings.com/user/sprigitis)