You can scroll, or move, the image on the screen by clicking the scroll bars or by using the following keyboard shortcuts:
Ctrl + é or Ctrl + 8 Scroll image up
Ctrl + ê or Ctrl + 2 Scroll image down
Ctrl + ç or Ctrl + 4 Scroll image left
Ctrl + è or Ctrl + 6 Scroll image right
Use your numeric keypad for the number shortcuts.
Adjusting the display using the Manager