Use dialog boxes

To do this	Press
Move to the next option or option group.	TAB
Move to the previous option or option group.	SHIFT+TAB
Switch to the next tab in a dialog box.	CTRL+TAB
Switch to the previous tab in a dialog box.	CTRL+SHIFT+TAB
Move between options in an open drop-down list, or between options in a group of options.	Arrow keys
Perform the action assigned to the selected button; select or clear the selected check box.	SPACEBAR
Select an option; select or clear a check box.	ALT+ the letter underlined in an option
Open a selected drop-down list.	ALT+DOWN ARROW
Select an option from a drop-down list.	First letter of an option in a drop-down list
Close a selected drop-down list; cancel a command and close a dialog box.	ESC
Run the selected command.	ENTER