Old Akro,
! 'Dead' reckoning is a common 'howler'. I always thought D. R. was 'Deduced' Reckoning, but same diff.
I like my 'whizz wheel', quick, compact, keeps the brain active, and never crashes or needs batteries or subscription renewals. (OK, mine is not so compact now as I had to buy a larger training version ('large print') due to
anno domini). And also thanks for the download, Lou.