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