The Bird's Eye View provides a zoomed-out view of the active diagram. It enables you to orient yourself quickly around large diagrams. The Bird's Eye View dock window can be shown or hidden by means of the View Toolbar :
menu or the
The highlighted box in the Bird's Eye View represents the viewed area on the open diagram called the viewport. You can pan the viewport by dragging it around the Bird's Eye View with the mouse. The corresponding active diagram will then reflect the fragment of the diagram visible through the viewport.