IT IS NOT GREAT AT THE MOMENT. NEEDS TO IMPROVE.

BUT YOU TYPE @ THEN START TYPING THE NAME AND IT SHOULD GIVE YOU CHOICES THEN YOU CLICK THE USER YOU WANT TO TAG.

nostr:npub1u596dl3yrlw0qg5jwp7ng7ua8g0jvu96znxlhkhmj784z3yrtyjqq8ukav 
nostr:npub1vgldyxx7syc30qm9v7padnnfpdfp4zwymsyl9ztzuklaf7j5jfyspk36wu