Renders a property non-visible in the graphic dialog without deleting it. Invisible properties are used in situations where a property is needed for a definition, but is meaningless to the user.
In the example above, the Stereotype property is used with both the Symbol and the Definition of a class. It must match. Users may choose the stereotype property in the class, and that value is automatically given to the symbol, where it is used to determine how the symbol is displayed. However, the user does not need to see the Stereotype property in the Symbol tab of the Class definition, since it is already in the Class definition dialog. To have it in both places would only confuse the user. It is made invisible.