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