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