In the rich text editor:
@Charlie_Sparks
In a comment:
[Charlie_Sparks](https://chowlings.com/user/Charlie_Sparks)
For Names and Avatars:
In the rich text editor:
%Charlie_Sparks
In a comment:
[![Charlie_Sparks's Avatar](https://chowlings.com/images/avatars/541.png?v=1644063305)](https://chowlings.com/user/Charlie_Sparks) [Charlie_Sparks](https://chowlings.com/user/Charlie_Sparks)