Tagging just means that your character is currently in a conversation with or engaged with in some capacity or another. For example for the scene right now would read a bit like this.<br/><br/>Name: Shizuka<br/>Place: Futanari Training School<br/>Tagged: Airi<br/><br/>I've done this a few times in other RPs. It's just a little reminder to the readers who is wear and who they are talking to or in conflict with.