| lower_case_letter | other_special_character
basic_graphic_character ::=
upper_case_letter | digit
| special_character | space_character
basic_graphic_character | format_effector
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
a b c d e f g h i j k l m n o p q r s t u v w x y z