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