Using 3DDISTANCE and 3DSWIVEL in AutoCAD

3DDISTANCE changes the cursor to a line with one arrow pointing up and one pointing down. Click and drag the cursor vertically toward the top of the screen to move the camera closer to the objects, making them appear larger. Click and drag the cursor vertically toward the bottom of the screen to move the camera away from the objects, making them appear smaller. 

3DSWIVEL is Simulates panning with a camera in the direction that you drag. The target of the view changes. You can swivel the view along the XY plane or along the Z axis.