SteeringWheels are tracking menus that allow you to access different 3D navigation tools from a single tool.
To display a wheel, you must first enable it by turning on Show SteeringWheelsin the SteeringWheels preferences. When enabled, press Ctrl-Shift-N show the SteeringWheels in the Viewer window.
Once you set the SteeringWheels to display, use the available navigation tools by either clicking over one of the wedges on the wheel or clicking and holding down the mouse button. Once the button is held down, drag over the Viewer window to reorient the current view. Releasing the button returns you to the SteeringWheel.