Dialog box keyboard shortcuts in Windows 7

Keyboard shortcuts in Windows 7 can be used to make our daily task much easier, interactive, and efficiently saves our time & effort.
Dialog box keyboard shortcuts

Keyboard Shortcuts Task Performed
Ctrl+Tab Move forward through tabs
Ctrl+Shift+Tab Move back through tabs
Tab Move forward through options
Shift+Tab Move back through options
Alt+underlined letter Perform the command (or select the option) that goes with that letter
Enter Replaces clicking the mouse for many selected commands
Spacebar Select or clear the check box if the active option is a check box
Arrow keys Select a button if the active option is a group of option buttons
F1 Display Help
F4 Display the items in the active list
Backspace Open a folder one level up if a folder is selected in the Save As or Open dialog box