Thanks Erel, I think that the addition of a hex notation would be a Good Thing.
In fact since I want a byte array initialised with hex values, HexToDec() (which returns a single number) is not really what I want. A version of StringToBytes() that copes with hex notation as well as doing the type coercion would be nearer the mark.
Similarly it is sometimes convenient to display a buffer's content as a string of hex characters, requiring the converse function.
Best regards, Mike.