Show, hide, and outline data

ALT+SHIFT+RIGHT ARROW
Groups rows or columns.
ALT+SHIFT+LEFT ARROW
Ungroups rows or columns.
CTRL+8
Displays or hides the outline symbols.
CTRL+9
Hides the selected rows.
CTRL+SHIFT+( (opening parenthesis)
Unhides any hidden rows within the selection.
CTRL+0 (zero)
Hides the selected columns.
CTRL+SHIFT+) (closing parenthesis)
Unhides any hidden columns within the selection.
Switch to the previous program.
CTRL+ESC
Display the Windows Start menu.
CTRL+W or CTRL+F4
Close the selected workbook window.
CTRL+F5
Restore the window size of the selected workbook window.
F6
Switch to the next pane in a worksheet that has been split (Window menu, Split command).
SHIFT+F6
Switch to the previous pane in a worksheet that has been split.
CTRL+F6
When more than one workbook window is open, switch to the next workbook window.
CTRL+SHIFT+F6
Switch to the previous workbook window.
CTRL+F7
When a workbook window is not maximized, perform the Move command (on the Control menu for the workbook window). Use the arrow keys to move the window, and when finished press ESC.
CTRL+F8
When a workbook window is not maximized, perform the Size command (on the Control menu for the workbook window). Use the arrow keys to resize the window, and when finished press ESC.
CTRL+F9
Minimize a workbook window to an icon.
CTRL+F10
Maximize or restore the selected workbook window.