On 12 May 2014 at 18:23, J. Forster wrote: > Does anyone know where the down=ON came from. It *seems* irrational to me. Well, I don't know if I would characterize it as irrational, but it most certainly seems counter-intuitive to me. UP is towards the light (sun), DOWN is towards the dark (the mine). But what do **I** know ?.... :-) Ken W7EKB