Hi Alan,

...you know what I said about the bugs creeping in as the code increases!!

Hihi.. Yes, I think it is an exponential function (at least!). When the code 
exceeds
a certain critical mass, it is impossible to correct one bug without introducing
two new bugs, or more, and these new bugs are to be found where you least
expect them. No wonder that Micro$oft has many tens of thousands of bugs
on their Windows "todo" list (according to rumours).

:) again

73!

Johan SM6LKM