tokens: So if you have any restrictions on what events are shown to what users , someone can potentially just replace the title in their form with an event they should n't be able to rsvp for , but you 'd never know that from the email you receive .
ner_tags: O O O O O O O O O O O O O O O O O O O O O O O O B-User_Interface_Element O O O O O O O O O O O O O O O O O O O O O O O O