Even though Switzerland is a small country, its people do speak no less than
four different languages. Everything from the list of the ingredients on the
package of the groceries to the manual of the most complicated TV set has to be
printed in three different languages (german, french and italian).

The so called « german speaking » Swiss don’t speak the same german as the
Germans or the Austrians do, but what is known as « Swiss-German ». To make it
even worse, each state has its own dialect, but there is no written
« Swiss-German » at all ! Fortunately, the Germans, the Austrians and the
Swiss-Germans use the same written german language which in turn is close to the
so called « high german », a « quasi-standard » of the german languages.

Source: about.ch