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