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