Communications Mode

1. How do I move from location to location in Communications Mode?
   
2. How can I see the list of communication outlets?
   
3. Is the World News communication outlet useful? Does the news ever change?
   
4. Is the Cafeteria important?
   
5. Is the Maintenance Core important?
   
6. Is the communications outlet in Perelman's office useful?
   
7. How about the Control Center -- is that outlet important?
   
8. Does the communication outlet on the rooftop have any significance?