It sounds like you're referring to how bios (like on social media profiles) can include @mentions or hashtags. If you're writing a bio and want to mention someone or use hashtags, you can do it to show your interests, create connections, or even highlight key things you're into.

For example:

* "Love coding and video games! @username and I are working on a new app. #TechLife"
* "Just here to vibe and share some art! #Artist #DigitalArt"