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