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