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