This example is the same as example 2, except for the UI that has been activated. The UI icons are described below.

Icons:
Keyboard shortcuts:	Up arrow	Down arrow	Left arrow	Right arrow	= [ Page up	- ] Page down	None
Description:	Move up	Move down	Move left	Move right	Zoom in	Zoom out	Zoom extends

Apart from clicking the icons, you can also navigate using the keyboard. The buttons are in table above. Zoom Extends changes the zoom and position of the camera to encompass all visible nodes. The UI buttons can be toggled on or off by pressing the U button on the keyboard.