When
            creating and editing hotkeys, the following keystroke conventions
            apply:
         
         
            - You are limited to four keystrokes per
               hotkey operation.
            
- Keystrokes in a hotkey operation are
               pressed at the same time.
            
- You cannot use a combination of keystrokes
               more than once.
            
Logical Ordering
            
            Logical ordering means
               that the keystrokes in a hotkey combination are organized to conform
               to conventions, regardless of the order in which you enter them.
               Keys are saved in alphanumeric order except for the following:
            
            
               - Alt, Shift, Ctrl,
                  and Space are always
                  saved in that order, regardless of the order in which you enter
                  them.
               
- Alt, Shift, Ctrl,
                  and Space are always
                  forced to the beginning of a keystroke sequence.
               
- Del, Ins, Home, PgUp, End,
                  and PgDn are always
                  forced to the end of a keystroke sequence.
               
Since logical ordering
               is applied to hotkey combinations, you cannot use a combination
               of keystrokes more than once.