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