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