In the rich text editor:
@Svetlanazxs
In a comment:
[Svetlanazxs](https://chowlings.com/user/Svetlanazxs)
For Names and Avatars:
In the rich text editor:
%Svetlanazxs
In a comment:
[![Svetlanazxs's Avatar](https://chowlings.com/images/avatars/default.jpg)](https://chowlings.com/user/Svetlanazxs) [Svetlanazxs](https://chowlings.com/user/Svetlanazxs)