This specifies semi-colon separated hexadecimal data. Two hexadecimal digits
in hexadecimal character string represents one byte . Hexadecimal strings can
be entered in the following formats :
1) continuous hexadecimal digits like -- 0123456789abcdef
2) hexadecimal digits separated by space ' ' -- 01 23 45 67 de 0f
3) Two hexadecimal digits separated by delimeter ':' -- 01:02:a0 de:0f 78:5e
4) Four hexadecimal digits separated by delimeter '.' -- 01ab.c0de.7865
If a Hex optiondata is entered again, it gets concatenated with the
previous Hex data.