` ::OK. So although n*0=0, n*(something small) = (something bigger). Fair enough. Thanks Rex. Yes, that does help. ::However, I do wonder if the return-on-investment justifies the effort. Never mind. Looking at it another way, ALL improvements are, ... improvements. And it's up to the individual as to where they devote their time and effort, and whether the ``return-on-investment`` is adequate for their own criteria. So I will now crawl back into my corner and keep my subjective opinions to myself. Thanks Rex. Cheers,   `