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