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