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