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