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