).  HH
    		can be one or two hex digits
      \uHHHH	the Unicode character whose value is the hexadecimal value HHHH.
    		HHHH can be one to four hex digits.
      \UHHHHHHHH the Unicode character whose value is the hexadecimal value
    		HHHHHHHH. HHHHHHHH can be one to eight hex digits.
    
    Exit Status:
    Returns success unless a write error occurs.