people using zz and developing systems with zz for years and years

Xard, please, you tell in few words what zz about, what it for (few strong words- you know)
and what on earth repainting has to do with it? this feature there because it needed - (same picture with fractals - i'm tired to repeat - fractal is not a buy or sell signal - you think anybody listens? ... if they make the pot to pee on - some can wear it as a hat but that's doesn't make it such a good idea...)