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