Relationships
Lists the relationships of the selected element. Both direct and complex relationships are displayed. For example: the direct ownedAttribute relationships between a class and its attributes, and the complex relationship between an association of a class and another class that represents an element itself.
You can use the Properties toolbar to remove relationships. In addition, you can select linked elements in the Explorer tree or view their properties. You can sort the entries in ascending or descending order by clicking the corresponding column header.