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