I hope one cannot rename balloon note in drawing. It's name is auto generated and not in control of user. However, I could see different nomenclature for balloon note. One having prefix as balloon note and others having prefix as balloon_note. See attached image for reference.
Actually my sole purpose of this query is to identify balloon note from name of the note using toolkit API. However I just want to confirm that this name is not in user's control (only Creo internal is giving this name) and will have always name as balloon_note or balloon note.