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