In the rich text editor:
@SpindleSpice
In a comment:
[SpindleSpice](https://chowlings.com/user/SpindleSpice)
For Names and Avatars:
In the rich text editor:
%SpindleSpice
In a comment:
[![SpindleSpice's Avatar](https://chowlings.com/images/avatars/41.png?v=1665279369)](https://chowlings.com/user/SpindleSpice) [SpindleSpice](https://chowlings.com/user/SpindleSpice)