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