When adding an element to a UML diagram view, the element has its default name like "Class" or "Use case". You can immediately name an element by typing its name (over the blue highlighted name) directly after inserting it.
If the name does not fit the default size of the element, the element will automatically resize until the name fits. If you want the element to keep its original size when naming it, click thecontrol on the element before entering the name. Word wrap is activated, and the name wil continue on the next line if it does not fit the width of the entity.
Word wrap is available for the following elements: Class and Use case in the Use case diagram, and Class, Data type, Enumeration and Interface in a Class diagram.
Word wrap inactive (left) and active (right)