Implementations 
shall also provide the generic library package Wide_Wide_Text_IO.Complex_IO. 
Its declaration is obtained from that of Text_IO.Complex_IO by systematically 
replacing Text_IO by Wide_Wide_Text_IO and String by Wide_Wide_String; 
the description of its behavior is obtained by additionally replacing 
references to particular characters (commas, parentheses, etc.) by those 
for the corresponding wide wide characters.