In the rich text editor:
@L0ver4T
In a comment:
[L0ver4T](https://chowlings.com/user/L0ver4T)
For Names and Avatars:
In the rich text editor:
%L0ver4T
In a comment:
[](https://chowlings.com/user/L0ver4T) [L0ver4T](https://chowlings.com/user/L0ver4T)