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