220 221 222 223 Identifier 224 Directive 225 Label 226 UnsignedInteger 227 UnsignedReal 228 229 ScaleF actor 230 Sign 231 CharacterString 232 DigitSequence 233 234 Letter 235 236 237 238 Digit 239 240 StringElement Lettel I Letter I Digit I Leffci {Letter I Digit Digit.' ,'4I1cnce . = Digit.' (illence . Digit.'quence "." DigitSequence ["e" Scale I ill '(or 1 I DigitSequence "e" ScaleFactor. = [Sign IlJigitSequence. "+" I "-". "I" SI"ingElement { StringElement J "I" Digit I Digit J • " " 'b" " " "d" " " "f" " " a c e g "h" ., "j" "k" "1" " " " " m n " " " " " " " " " "t" " " 0 p q r s u " " .. " " " " " " " V 'N X Y z "0" "2" u 3 "4" I "5" I "6" "7" ".<," "9" "I I" AnyCharacterExceptApostrophe. 

