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