Ctrl + Function

Ctrl + F1	Toggles the display of the Ribbon.
Ctrl + F2	Displays the Print Options on the File tab.
Ctrl + F3	Displays the Name Manager dialog box.
Ctrl + F4	Closes the active workbook or window (saving first).
Ctrl + F5	Restores the size of the active workbook or window.
Ctrl + F6	Moves to the next open workbook or window.
Ctrl + F7	Activates the Move window command.
Ctrl + F8	Activates the Resize window command.
Ctrl + F9	Minimises the size of the active workbook or window.
Ctrl + F10	Toggles between maximising and restoring the size of the active workbook or window.
Ctrl + F11	Redundant see last table below.
Ctrl + F12	Displays the Open dialog box.

Ctrl + F1 Toggles the display of the Ribbon.
Ctrl + F2 Displays the Print Options on the File tab.
Ctrl + F3 Displays the Name Manager dialog box.
Ctrl + F4 Closes the active workbook or window (saving first).
Ctrl + F5 Restores the size of the active workbook or window.
Ctrl + F6 Moves to the next open workbook or window.
Ctrl + F7 Activates the Move window command.
Ctrl + F8 Activates the Resize window command.
Ctrl + F9 Minimises the size of the active workbook or window.
Ctrl + F10 Toggles between maximising and restoring the size of the active workbook or window.
Ctrl + F11 Redundant see last table below.
Ctrl + F12 Displays the Open dialog box.