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.
It was to be the first of many instances in which he would work with producer Brian Grazer, who eventually became his partner and the co-founder of Howard's production company, Imagine Films Entertainment (established in 1985), and screenwriters Lowell Ganz and Babaloo Mandel, who formerly wrote for Happy Days.