Notifications to computer users are provided via indicators such as lights. The indicators are controlled according to rules, to convey computer-related state information to users in a consistent manner. Locations of visible indicators are chosen to facilitate easy viewing. The rules dictate colors and/or...http://www.google.com.au/patents/US20040222977?utm_source=gb-gplus-sharePatent US20040222977 - Notification lights, locations and rules for a computer system
