SA_DB_VALID_CHARACTERS SA_DB_VALID_NUMERAL_CHARACTERS 0123456789 SA_DB_VALID_OPERATOR_CHARACTERS SA_DB_OPERATOR_MINUS -–−﹣－ SA_DB_OPERATOR_PLUS + SA_DB_OPERATOR_TIMES *×⋅· SA_DB_VALID_ROLL_COMMAND_DELIMITER_CHARACTERS dD SA_DB_CANONICAL_REPRESENTATIONS SA_DB_CANONICAL_OPERATOR_REPRESENTATIONS SA_DB_OPERATOR_MINUS − SA_DB_OPERATOR_PLUS + SA_DB_OPERATOR_TIMES × SA_DB_CANONICAL_ROLL_COMMAND_DELIMITER_REPRESENTATION d