The Properties view shows attributes and references of the model element selected in the active model editor. This view can be displayed using the Show Properties View in the model editor, or using the main menu Window > Show View > Properties.
This views is divided into two sections: Attributes and References. The layout of these sections can be customized using the view toolbar drop-down menu:
You can customize the list of attributes and references displayed selecting a working set, if any, to group or hide some features.
You may filter the features displayed here using the Filters button in the section toolbar. You may for example exclude derived references, which are numerous in UML 2.1 metamodel. You may also change the decorations applied on model element labels using the Label Decorations... item in the section dropdown menu.
The Properties view can be used to modify the contents of the model.