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