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