In the rich text editor:
@00m4h
In a comment:
[00m4h](https://chowlings.com/user/00m4h)
For Names and Avatars:
In the rich text editor:
%00m4h
In a comment:
[](https://chowlings.com/user/00m4h) [00m4h](https://chowlings.com/user/00m4h)
