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