System testing is basically a part of software testing and test plan should always contain specific space for this testing. To test the system as a whole, requirements and expectations should be clear and the tester needs to understand real time usage of application too.
The city of Milwaukee, Wisconsin was chosen as the location in which Happy Days was set. Tom Miller, one of the producers, grew up in Milwaukee. In addition, Milwaukee gave the show a midwest flavor that they thought would appeal to a broad-based audience.
The United Nations invites each person of any age, plus every classroom, business and government to celebrate the International Day of Happiness each year on March 20. This year, even cartoon characters have joined in as the United Nations teams up with a group famous for lacking good cheer: the Angry Birds.