In the rich text editor:
@kat-2_64
In a comment:
[kat-2_64](https://chowlings.com/user/kat-2_64)
For Names and Avatars:
In the rich text editor:
%kat-2_64
In a comment:
[](https://chowlings.com/user/kat-2_64) [kat-2_64](https://chowlings.com/user/kat-2_64)
