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