
An octal number can be represented by the octal escape "\0" and maximally three digits from the digit class [07]. The octal number should not exceed \0377.
A hexadecimal number can be represented by the octal escape "\x" or "\X"and maximally two characters from the class [09AF]. The maximum hexadecimal number should not exceed \xFF.
© djmw, July 9, 2001