In the rich text editor:
@StudioMaverick
In a comment:
[StudioMaverick](https://chowlings.com/user/StudioMaverick)
For Names and Avatars:
In the rich text editor:
%StudioMaverick
In a comment:
[![StudioMaverick's Avatar](https://chowlings.com/images/avatars/default.jpg)](https://chowlings.com/user/StudioMaverick) [StudioMaverick](https://chowlings.com/user/StudioMaverick)