View Cube
Keyboard: NAVVCUBE
Displays a navigation tool, called view cube, when working in 2D model space or 3D visual styles. It indicates the current viewing direction and allows you to switch between views.
Enter an option [ON/OFF/Settings]: To toggle the display of the view cube, choose On or Off. To open the View Cube Settings dialog box and change the appearance and location of the view cube, Choose Settings.