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