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