You can enter an enumeration (a list of fixed values) with the button “Enumeration”. The name is used as a type designation for an attribute of another class. With the small green button you can enter the different values.
2. Example
An example of an enumeration. The "geslachttype" ("gender type") enumeration is used as a type designation for the "geslacht" ("gender") attribute of the "Persoon" class.
