In the rich text editor:
@Fogcreature
In a comment:
[Fogcreature](https://www.worldofgaia.org/user/Fogcreature)
For Names and Avatars:
In the rich text editor:
%Fogcreature
In a comment:
[](https://www.worldofgaia.org/user/Fogcreature) [Fogcreature](https://www.worldofgaia.org/user/Fogcreature)