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