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