───X2C(hexstring)─────────
X2C converts hexstring (a string of hexadecimal characters) to character.
hexstring can be of any length. You can optionally add blanks to hexstring (at byte boundaries only, not leading or trailing positions) to aid readability; they are ignored.
If necessary, hexstring is padded with a leading 0 to make an even number of hexadecimal digits.
Here are some examples:
X2C('4865 6c6c 6f') -> 'Hello' /* ASCII */ X2C('3732 73') -> '72s' /* ASCII */ X2C('F') -> '0F'x