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