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