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