Relevant to Blender 2.33
Certain window managers also use the following hotkeys. So ALT-CTRL can be substituted for CTRL to perform the functions described below if a conflict arises.
CTRL-LEFTARROW. Go to the previous Screen.
CTRL-RIGHTARROW. Go to the next Screen.
CTRL-UPARROW or CTRL-DOWNARROW. Maximise the window or return to the previous window display size.
SHIFT-F4. Change the window to a Data View
SHIFT-F5. Change the window to a 3D Window
SHIFT-F6. Change the window to an IPO Window
SHIFT-F7. Change the window to a Buttons Window
SHIFT-F8. Change the window to a Sequence Window
SHIFT-F9. Change the window to an Oops Window
SHIFT-F10. Change the window to an Image Window
SHIFT-F11. Change the window to a Text Window
SHIFT-F12. Change the window to an Action Window