In the rich text editor:
@WolfMaster000
In a comment:
[WolfMaster000](https://chowlings.com/user/WolfMaster000)
For Names and Avatars:
In the rich text editor:
%WolfMaster000
In a comment:
[![WolfMaster000's Avatar](https://chowlings.com/images/avatars/default.jpg)](https://chowlings.com/user/WolfMaster000) [WolfMaster000](https://chowlings.com/user/WolfMaster000)