Overview pane (desktop & browser)
Use the overview pane to see a mini-map of your graph and use to zoom and move around with more high level granularity
Toggle on/off using the toolbar Overview button, the blue box in the overview pane will always be in sync with the visible graph on the main perspective
Control the zoom using:
Mouse control on the main graph or the overview pane
Drag and drop in the Overview pane
Resize the overview pane using the top left drag icon
Close the pane using the toolbar or click the close icon on the top right of the overview pane