In the rich text editor:
@Prismorean
In a comment:
[Prismorean](https://chowlings.com/user/Prismorean)
For Names and Avatars:
In the rich text editor:
%Prismorean
In a comment:
[![Prismorean's Avatar](https://chowlings.com/images/avatars/1652.png?v=1677346883)](https://chowlings.com/user/Prismorean) [Prismorean](https://chowlings.com/user/Prismorean)