fff89994_ation_Wheel___Beyond_the_Paper__Description
[Wedge] Pan [Usage Steps] When you click and hold the Pan wedge, the mouse pointer changes to the Pan Tool. You drag the Pan Tool to move the view parallel to the screen. You release the mouse button to exit the Pan Tool. [Description] 
Move the view parallel to the screen.
Autodesk Design Review 2008: Full Navigation Wheel - Beyond the Paper
Description