In the rich text editor:
@BonyFish55
In a comment:
[BonyFish55](https://chowlings.com/user/BonyFish55)
For Names and Avatars:
In the rich text editor:
%BonyFish55
In a comment:
[](https://chowlings.com/user/BonyFish55) [BonyFish55](https://chowlings.com/user/BonyFish55)