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