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