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