Changing the orientation of the image
The following methods may be used to rotate the image.
Dragging
Set the cursor mode to Rotate and drag the mouse. Adjust the sensitivity of the mouse movement in the Graphics preferences.
Shift + Drag with middle mouse button
Use the mouse wheel (or middle button) held down in any cursor mode. Operates as dragging in the Rotate cursor mode.
Arrow Keys
Each keystroke rotates the image about the object point by the amount currently set in the Graphics preferences. These commands may also be found in the Graphics > Orientation > Rotate menu, for the sake of completeness.
Explicitly
Specify orientation in terms of longitude and latitude in the Orientation settings dialog box.
In all cases the rotations occur about the object point.