Chris Rowley writes:
 > Exactly!  So perhaps Sebastian is correct and we should only provide
 > the hand-crafted method.
 >
 > Is that Ok with you, Dr Rahtz?

I have never claimed to have a doctorate, you know, and do not in fact
have one. it demeans the achievements of others to casually assign me
credit I do not possess

 >  But I am sure that other list members
 > will be more constructive than he.

My apologies, I did not realize that only contributions from serious
mathematicians were allowed. Scientists rule, OK?

Sebastian