An umlaut is a diacritical mark consisting of two dots placed over a vowel, typically used in languages such as
German, Finnish, and Swedish. In linguistic terms, it modifies the sound of the vowel, often
indicating a change in pronunciation. For example, in German, the umlaut can transform vowels
like "a," "o," and "u" into ä, ö, and ü, respectively. Besides its linguistic function, the umlaut is also used in typography to represent various sounds and characters in
different languages and writing systems.