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