An event can be simple, but most carry some information. The attibutes that are carried as part of the event is shown in parenthesis: event(attrib1, attrib2, ..., attribn)
Simple Events: Close the door, Open the door, Pickup phone,...
Typical Events:Mouse button press(Left or Right),
Other examples: Train Departs (origin city, dest city)
An event conveys information from one object to another: Person sends (document) Company
Events are triggers that cause some action to take place and force a change of state in an object
Event are usually thought to be instantaneous: Press Accelerator
