In the rich text editor:
@Lordkirby1567
In a comment:
[Lordkirby1567](https://chowlings.com/user/Lordkirby1567)
For Names and Avatars:
In the rich text editor:
%Lordkirby1567
In a comment:
[![Lordkirby1567's Avatar](https://chowlings.com/images/avatars/default.jpg)](https://chowlings.com/user/Lordkirby1567) [Lordkirby1567](https://chowlings.com/user/Lordkirby1567)